Citizens band radio

665:, and lobbied for the legalisation of CB. In late 1977, having legalised Australian CB and allowed the import / sale of American and Japanese 23 channel sets, the Federal Government drafted new interim regulations for Australian 18 channel transceivers. The new RB249 regulations came into effect on January 1, 1978, and the last official registration date for 23 channel sets was January 31, 1978. After this date, use of unregistered 23 channel CB sets was deemed illegal and unlicensed sets were no longer eligible to be licensed. The 18 channel band plan used 16 channels of the 23 channel CB radios plus 2 extra channels at 27.095 and 27.195 MHz, to make up the 18 channels. The original channels 1, 2, 3, 4, 10, 21 and 23 were deleted from the 18 channel band plan. So channel 1 on an 18 channel was actually channel 5 on a 23 channel radio. These roughly corresponded to the present channels 5–22, except for the two unique frequencies that are known as 11A (Channel 7 on an 18 channel Australian CB) and 19A (Channel 16 on an 18 channel Australian CB) or remote control frequencies but are no longer part of the Australian 27 MHz CB band since 40 Channels were introduced. On January 1, 1982, the American 40 channel band plan was adopted. 1722:(SSB stations are authorized to use 12 watts, as opposed to 4 watts for AM stations) and to more easily locate other SSB stations. With the FCC authorization of 40 channels, SSB operation shifted to channels 36–40. Channel 36 (or 38 for LSB) became the unofficial SSB "calling channels" for stations seeking contacts, with the subsequent conversation moving to channels 37–40. CBers with AM-only radios are asked to not use channels 36 through 40. In return, SSB stations stay off the remaining 35 channels so they could be used by AM stations. This agreement provides interference-free operation for all operators by separating the far more powerful SSB stations from the AM stations. This solution also resolves the confusion created by the false advertising that SSB radios have 120 channels compared to only 40 for AM radios. 569:

authorized channels were increased to 40. The current specification is simply "4 watts output (AM) or 12 watts output (SSB)" as measured at the antenna connector on the back of the radio. The old specification was often used in false advertising by some manufacturers who would claim their CB radios had "5 watts" long after the specification had changed to 4 watts output. The older 23 channel radios built under the old specifications typically had an output of around 3.5 to 3.8 watts output when measured at the antenna connector. The FCC simply rounded up the old "5 watts DC input to the final amplifier stage" specification to the new "4 watts output as measured at the antenna connector on the back of the radio", resulting in a far simpler and easier specification.

47: 946: 1103:, and CB radio in the UK is now license-free. The old MPT 1320 27/81 band will continue to be available for the foreseeable future. On 27 June 2014, changes were made by Ofcom to allow the use of AM & SSB modes on CB in the UK legally for the first time. The rules regarding non-approved radios and power levels above 4 Watts on AM/FM and 12 Watts on SSB still apply, despite deregulation. Persons using illegal equipment or accessories still risk prosecution, fines or confiscation of equipment, although this is rarely enforced. AM and SSB on the freeband and amplifier use are common among enthusiasts. 2529:

Russia, it is channel 15 (in addition to traditional emergency channel 9 and truckers' channel 19), in Greece it is channel 13, in Italy it is channel 5, all AM. These frequencies may have evolved because tuned circuits (particularly antennas) work best in the middle of the band; the frequency for channel 19 (not channel 20) is the center of the 40 channel US band and other things being equal, signals will be transmitted and heard the farthest. Since less standardization exists in Europe, CB there is more associated with hobbyists than with truckers.

1096:. MPT 1320 also restricted antennas to a maximum length of 1.5 meters (5'), with base loading being the only type permitted for 27 MHz operation. Over the next several years antenna regulations were relaxed, with antenna length increasing to 1.65 meters (5'5") and centre- or top-loading of the main radiating element permitted. On 1 September 1987 the UK added the usual 40 frequencies (26.965–27.405 MHz) used worldwide, for a total of 80 channels at 27 MHz; antenna regulations were further relaxed, and the 934 MHz band was withdrawn in 1998. 577:

channel 11 was reserved as a calling frequency (for the purpose of establishing communications); however, this was withdrawn in 1977. During this early period, many CB radios had "inter-station" channels colored on their dials, while the other channels were clear or normally colored. It was common for a town to adopt an inter-station channel as its "home" channel. This helped prevent overcrowding on channel 11, enabling a CBer to monitor a town's home channel to contact another CBer from that town instead of a making a general call on channel 11.

2801:(from late spring through mid-summer). Skip contributes to noise on CB frequencies. In the United States, it is no longer illegal to engage in (or attempt to engage in) CB communications with any station more than 250 km (160 mi) from an operator's location. This restriction used to exist to keep CB as a local (line-of-sight) radio service; however, in the United States the restriction has been dropped. The legality of shooting skip is not an issue in most other countries. A recent FCC decision now allows shooting skip in the United States. 1726:

Reality is far different: Attempting an SSB conversation while an AM conversation is in progress results in jammed communications for everyone. In general, each channel can only support one AM conversation and no others; if no AM conversation is in progress, two SSB conversations can share one channel without interference if one is in LSB and the other in USB mode. For a particular conversation, everyone must be tuned to the same channel and same mode in order to talk with each other. Starting in October 2021 the FCC has approved FM for CB in the US.

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fishery radio services and these frequencies are heavily used for marine communications. Japan's "double side band fishery radio" or "DSB Fishery Radio Service" covers 26.760 MHz-26.944 MHz, 27.016 MHz, and 27.524-27.988 MHz. However, frequencies such as 27.005 MHz AM are widely pirated in Japan with very high power transmitters. This causes interference to the authorized low-power 1 Watt DSB (1 Watt AM) fishery radio service. Instead of 26–27 MHz, Japan has authorized several UHF FM CB-type

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Australia. After peaking in the 1970s and early 1980s, the use of 27 MHz CB in Australia has fallen dramatically due to the introduction of 477 MHz UHF CB (with FM and repeaters) and the proliferation of cheap, compact handheld UHF transceivers. Technology such as mobile telephones and the internet have provided people with other choices for communications. The Australian government has changed the allocation of channels available for UHF CB Radio from 40 to 80, and doubled the number of repeater channels from 8 to 16.

1763:, the channels are shifted 5 kHz down; for example, channel 30 is 27.300 MHz. Many operators add a switch to change between the "zeroes" (the Russian/Polish channel assignment) and the "fives" (the international/European assignment). Most contemporary radios built for those markets can do "fives" as well as "zeroes" out of the box. Since roughly 2005–2006, Russia and Poland have adopted use of the standard US channel offset as well as the older channel plan, for two overlapping "grids" of channels. 31: 512: 2572:

10 meter operation. Lax enforcement enables manufacturers of illegal linear amplifiers to openly advertise their products; many CB dealers include these amplifiers in their catalogs. Due to their rampant, unchecked use of linear amplifiers, American CB Radio operators are often referred to as "Alligators", by operators in other countries (suggesting American operators are "All Mouth and No Ears"). Attempts by law-abiding CB users to increase regulatory oversight have been ineffective.

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26.9650 MHz to 27.4050 MHz (40 channels), power output is 4 watts for AM and FM and 12 watts PEP for SSB. Channel 9 is reserved for emergencies, and channel 11 is a calling channel. On UHF 477 MHz, citizens band PRS radio devices are allowed 5 watts power output on FM on 39 assigned channels spaced at 12.5 kHz intervals from 477.0125 to 477.4875 MHz. Channel 9 is reserved for emergencies, and channel 11 for calling. A short-range

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200,000 licences were issued (Australia's Population in 1978 was 14.36 million). The regulations called for one licence per CB radio. The price for a licence in 1977 was AU$ 25 per year (In mid 1977 the Australian Dollar exchange rate was AU$ 0.90 to US$ 1.00), a not insubstantial amount for the average Australian wage-earner. Australian CB radio uses AM, USB, and LSB modes (no FM) on 27 MHz, allowed output power being 4 Watts AM and 12 Watts SSB. When

55: 5614: 2460:, like New Zealand and the UK, permits the use of two HF CB bands. South Africa has a 23 channel AM / SSB 29 MHz CB allocation (called "29 Megs" or "29 MHz CB") from 29.710 to 29.985 MHz in 12.5 kHz steps. South Africa also permits use of standard CB channels 19–27 (27.185–27.275 MHz) with AM / SSB permitted. Many radios sold in South Africa feature both the 27 MHz and 29 MHz bands. A license from 1655: 5624: 1073:"Convoy GB" in 1976 (both of which were Top 5 hits). By 1980, CB radio was becoming a popular pastime in Britain; as late as the summer of 1981 the British government was still saying that CB would never be legalized on 27 MHz, proposing a UHF service around 860 MHz called "Open Channel" instead. However, in November 1981 (after high-profile public demonstrations) 40 frequencies unique to the UK, known as the 5603: 213:(FCC). These services began in 1945 to permit citizens a radio band for personal communication (e.g., radio-controlled model airplanes and family and business communications). In 1948, the original CB radios were designed for operation on the 460–470 MHz UHF band. There were two classes of CB radio: "A" and "B". Class B radios had simpler technical requirements, and were limited to a smaller frequency range. 202: 5634: 2818:", which may disrupt other communications and make the unapproved equipment obvious to regulators. Freebanding is done with modified CB or amateur equipment, foreign CB radios which may offer different channels, or with radios intended for export. Legal operation in one country may be illegal in another; for example, in the UK until June 2014 only 80 FM channels were legal. 2891:, to an operator with whom they have communicated via radio. Callbooks have evolved to include online databases that are accessible via the Internet to instantly obtain the address of another amateur radio operator and their QSL managers. The most well known and used on-line QSL database for the 11 meter / freebander community is QRZ11.COM, designed after its "big brother" 1744:(CEPT) adopted the North American channel assignments, except channel 23, frequency 27.235 MHz; channel 24, frequency 27.245 MHz; and channel 25, frequency 27.255 MHz. However, legal CB equipment sold in Europe does follow the North American channel designation. Some member countries permit additional modes and frequencies; for example, 1006:. The Indonesian government legalized CB on 6 October 1980 with a decision by the Minister of Communications, the "Ministerial Decree on the Licensing for the Operation of Inter-Citizens Radio Communication". Because many people were already using 40 channel radios prior to legalization, the American band plan (with AM and SSB) was adopted; a 1718:(SSB) operation involves the selection of either the Lower Side Band (LSB) or the Upper Side Band (USB) mode for transmit and receive. SSB radios also have the standard AM mode for communicating with standard CB radio models. With the original 23 CB channels SSB stations commonly used channel 16, to avoid interference to those using 2822:

selector that shifts all 40 channels above or below the band and a "+10 kHz" button to reach the model control "A" channels. These radios may have 6 or even 12 bands, establishing a set of quasi-CB channels on many unauthorized frequencies. The bands are typically lettered A through F, with the normal citizens band as D.

1135:(SSB), often vary from country to country; use of foreign equipment may be illegal. However, many countries have adopted the American channels and their associated frequencies, which is generally in AM mode except some higher channels which are sometimes in SSB mode. In September 2021 the FCC approved the use of FM on CB radio. 224:(UHF) radios, at the time, were neither practical nor affordable for the average consumer. On September 11, 1958 CB service class D was created on 27 MHz, and this band became what is commonly known today as "Citizens Band". Only 23 channels were available at the time; the first 22 were taken from the former 623:

Business users (such as tow-truck operators, plumbers, and electricians) moved to the VHF and UHF business band frequencies. The business band requires an FCC license, and usually results in an assignment to a single frequency. The advantages of fewer users sharing a frequency, greater authorized output power, clarity of

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that contained a crystal for each of the 23 channels, two extra slots existed, and one could order the 22A & 22B crystals for an easy plug-in. Channel 9 was officially reserved for emergency use by the FCC in 1969. Channel 10 was originally often used for highway travel communications east of the

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than Amateur Radio transceivers. It is also illegal to use these radios outside of the Amateur Radio bands by anyone in the US, since they are not type-certified for other radio services and usually exceed authorized power limits. The use of these radios within the Amateur Radio Service by a licensed

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was modified for CB by replacing a set of crystals used to tune portions of the 10 meter band, although some variants of the FT-101 were sold with the US FCC channels standard and were capable of transmitting above and below the legal 40 channels by another 10 or more channels. On some

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CB was the only practical two‑way radio system for the individual consumer, and served several subsets of users such as truck drivers, radio hobbyists, and those in need of short‑range radio communications, such as electricians, plumbers, and carpenters, who needed to communicate between job site and

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CB radio is not a worldwide, standardized radio service. Each country decides if it wants to authorize such a radio service from its domestic frequency authorizations, and what its standards will be; however, similar radio services exist in many countries. Frequencies, power levels and modes (such as

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officially calls the CB band the "General Radio Service," though regulations also note that this service is commonly called "CB". Canada's GRS uses the identical frequencies and modes as the United States citizens band, and no special provisions are required for either Canadians or Americans using CB

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radios in 1977, many operators used both UHF and HF radios and formed groups to own and operate local FM repeaters. Members of the CBTCC formed what became known as Australian Citizens Radio Movement (ACRM) in the early 1970s; this organization became the voice for legalization of CB radio throughout

779:. Other Australian cities which became CB radio "hotspots" were Seymour, Benalla, Holbrook and Gundagai, all located on the busy Hume Highway between Melbourne and Sydney. Other regional cities such as Bendigo, Mildura, Mount Gambier and Port Augusta, developed lively, colourful CB radio communities. 660:

Before CB was authorized in Australia, hand-held 27-MHz "walkie-talkies" were available, which used several frequencies between the present CB channels, such as 27.240 MHz. By the mid-1970s, hobbyists were experimenting with handheld radios and unauthorized 23 channel American CB radios. At

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Many truckers use two co-phased antennas, mounted on their outside mirrors. Such an array is intended to enhance performance to the front and back, while reducing it to the sides (a desirable pattern for long-haul truckers). To achieve this effect, the antennas must be separated by about eight feet,

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receivers. With the earliest sets two quartz crystals were needed for transmitting and receiving on each channel, which was costly. By the mid-1960s "mixer" circuits made frequency-synthesized radios possible, which reduced cost and allowed full coverage of all 23 channels with a smaller number

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was first legalised the 27 MHz CB Band was intended to be closed to Australian CBers in 1982 and only the 477 MHz UHF band was to continue, however this did not eventuate. The first 477 MHz CB radio in 1977 was designed and made in Australia by Philips TMC and was a 40 channel CB

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band. Voice transmissions in a Morse code-only segment are easily detectable by authorities. Amateur Radio Service operators record, locate, and report to the FCC frequency trespassing and intrusions of their frequency allocations by pirate transmissions or illegal operators for enforcement action.

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Base CB antennas may be vertical for omnidirectional coverage, or directional "beam" antennas may be used to direct communications to a particular region. Ground-plane kits exist as mounting bases for mobile whips, and have several wire terminals or hardwired ground radials attached. These kits are

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27 MHz is a relatively long wavelength for mobile communications, and the choice of antenna has a considerable impact on the performance of a CB radio. A common mobile antenna is a quarter-wave vertical whip. This is roughly 9 feet (2.7 m) tall; it is mounted low on the vehicle body,

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CB is still commonly used by long-haul truck drivers to communicate directions, traffic problems and other relevant matters. The unofficial "travelers channel" in most of the world is channel 19; in Australia it is channel 8 (27.055 MHz) and UHF channel 40 (477.400 MHz). In

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When looking at the FCC/CEPT channel list there are some channels with a spacing of 20 kHz instead of the regular 10 kHz step. These intermediate frequencies are reserved for the Radio Control Radio Service (RCRS). The RCRS service is commonly used for remote control of model aircraft and

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radio communications service for recreational use is from 477.5250 to 477.9875 MHz FM mode with 38 channels and a power output of 500 mW. A CB radio or Personal Radio Service Device under Class Assignment does not need an individual license to operate in Malaysia if it adheres to the

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or a frequency display — two different components, providing an identical result. Illegal operations may unintentionally end up on frequencies very much in use. For instance, channel 19 shifted two bands up is 28.085 MHz, which is in a Morse code / data-only part of the 10 meter ham

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Using radios outside their intended market can be dangerous, as well as illegal, as frequencies used by Citizen's Band radios from other countries may operate on frequencies close to, or be used by, emergency services (for example, the Indonesian service around 142 MHz operates on frequencies

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Russia uses an alphanumeric designation for their CB channel plans, because several "grids" or "bands" of 40 channels each are used, along with both AM and FM mode. Russian CB allocations follow the CB band 26.965–27.405 MHz (designated as band C), as well as 26.515–26.955 MHz

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In Malaysia, citizens band radios became legal when the "Notification of Issuance Of Class Assignments" by Communication and Multimedia Malaysia was published on 1 April 2000. Under this class assignment, a CB radio is classified as a "Personal Radio Service device". The frequency band is HF,

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With these factors in play, CB radio has once again gained popularity in recent years, an uptick not seen since the 90's. Manufacturers report an increase in sales, while social media sites like YouTube show a growing popularity in CB radio content, mainly as a hobby. The technology has also given

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For example, a freebander with an export radio who wants to use 27.635 MHz would choose channel 19 (27.185 MHz) and then shift the radio up one band (+450 kHz). It requires arithmetic on the part of the operator to determine the actual frequency, although more expensive radios

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Unlike amateur radios with continuous frequency tuning, CBs manufactured for export are channelized. Frequency selection resembles that of modified American CBs more than any foreign frequency plan. They typically have a knob and display that reads up to channel 40, but include an extra band

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During the 1970s, the FCC banned the sale of linear amplifiers capable of operation from 24 to 35 MHz to discourage their use on the CB band, although the use of high‑power amplifiers continued. Late in 2006, the FCC amended the regulation to exclude only 26–28 MHz to facilitate amateur

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From the outset, the government attempted to regulate CB radio with license fees and call signs, but eventually they abandoned this approach. Enthusiasts rushed for licences when the doors opened at post offices around Australia in mid-1977 and by the end of the first quarter of 1978 an estimated

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Originally, the U.S. had 23 CB channels; the 40 channel band plan was implemented in 1977. Two more channels between 22 & 23, commonly referred to as 22A & 22B, were available. Several people had 22A, but few had 22B. In the early 1970s Radio Shack sold a "base station" CB radio

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While a SSB radio has three possible "modes" (AM, LSB, USB) it can operate in, operation is still limited to the same 40 channels. Some manufacturers tried to sell more radios by claiming that with three different modes possible for each channel, it was the equivalent to 120 channels.

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CB radios using an omni-directional vertical antenna typically have a range of about 5 km to 30 km depending on terrain, for line of sight communication; however, various radio propagation conditions may intermittently allow communication over much greater distances. Base stations however may be

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is a factor at these frequencies. In addition, CB may have become a victim of its own popularity; with millions of users on a finite number of frequencies during the mid-to-late 1970s and early 1980s, channels often were noisy and communication difficult, which reduced interest among hobbyists.

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Japan's CB allocation consists of 8 voice and 2 radio control channels with a maximum power output of 500 mW. AM mode is the only mode permitted and antennas must be non-removable and less than 199 cm (78 inches) long. In Japan, the 26–28 MHz range is allocated to

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in addition to a purchased license ($ 20 in the early 1970s, reduced to $ 4 on March 1, 1975); however, when the CB craze was at its peak many people ignored the requirement and invented their own nicknames (known as "handles"). Lax enforcement of the rules on authorized use of CB radio led to

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load to the radio, and are often used on fiberglass vehicles such as snowmobiles or boats. They are also useful in base stations where circumstances preclude the use of a ground-plane antenna. Handheld CBs may use either a telescoping center-loaded whip or a continuously loaded "rubber ducky"

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The original FCC output power limitation for CB radios was "5 watts DC input to the final amplifier stage", which was a reference to the earlier radios equipped with tubes. With solid state radios becoming more common in the 1970s, the FCC revised this specification at the same time the

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Multiple countries have created similar radio services, with varying technical standards and requirements for licensing. While they may be known by other names, such as the General Radio Service in Canada, they often use similar frequencies (26–28 MHz) and have similar uses, and similar

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11-meter band, and channel 23 was shared with radio-controlled devices. Some hobbyists continue to use the designation "11 meters" to refer to the Citizens Band and adjoining frequencies. Part 95 of the Code of Federal Regulations regulates the class D CB service, on the

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radio service. Until 1975, only channels 9–14 and 23 could be used for "interstation" calls (to other licensees). Channels 1–8 and 15–22 were reserved for "intrastation" communications (among units with the same license). After the inter-station/intra-station rule was dropped,

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Like many other land mobile radio services, multiple radios in a local area share a single frequency channel, but only one can transmit at a time. The radio is normally in receive mode to receive transmissions of other radios on the channel; when users want to communicate they press a

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established the Citizens Radio Corporation during the late 1940s to manufacture class B handhelds for the general public. Originally designed for use by the public sector, the Citizens Radio Corporation sold over 100,000 units, primarily to farmers and the US Coast Guard.

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in many countries. The 27 MHz frequencies used by CB, which require a relatively long aerial and tend to propagate poorly indoors, discourage the use of handheld radios. Many users of handheld radios (families, hunters and hikers) have moved on to 49 MHz and the UHF

1767:(designated as band B) and 27.415–27.855 MHz (designated as band D). Some radios refer to the "mid band" (standard CB band) as "band D" which shifts the letters up one (making 26.515–26.955 MHz "band C" and 27.415–27.855 MHz "band E". 2814:) seem quiet and under-utilized, they are allocated to other radio services (including government agencies) and unauthorized operation on them is illegal. Furthermore, illegal transmitters and amplifiers may not meet good engineering practice for harmonic distortion or " 1770:

For the convenience of users of the grid were marked by letters. Classic is considered the marking when the main range is designated letter "C". The most common description of the channel is considered to be similar to the following: (C9FM or C9EFM or C9EF or 9EF).

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trade in imported CB gear exists in many countries. In some instances, the sale or ownership of foreign-specification CB gear is not illegal but its use is. With the FCC's minimal enforcement of its CB rules, enthusiasts in the US use "export radios" or European

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was still expensive, many boaters installed CB radios. Business caught on to this market, and introduced marine CBs containing a weather band (WX). There was much controversy over whether the Coast Guard should monitor CB radio, but for safety they did so, using

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mobile radios. In the United States, the FCC bans the importation and marketing of radios it deems easily modifiable for CB; it is illegal to transmit on CB frequencies with a ham radio except in emergencies where no other method of communication is available.

300:, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking regulations. The radios were crucial for independent truckers; many were paid by the mile, and the 55 mph speed limit lowered their productivity. 642:

The FCC restricts channel 9 to emergency communications and roadside assistance. Most highway travelers monitor channel 19. Truck drivers still use CB, which is an effective means of obtaining information about road construction, accidents and

810:. 27 MHz radios have the advantage of not requiring a certificate of proficiency to use, however they may not be monitored by rescue organisations or larger vessels. VHF radios are recommended by state agencies, such as Marine Safety Victoria and 1794:

The 25–30 MHz band (including the CB allocations and frequencies above and below the 26.5–27.860 MHz band) is heavily used for taxi cab and other mobile two-way communications systems in Russia, Ukraine and other former USSR country states.

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In the UK, a small but growing number of people were illegally using American CB radios during the late 1970s and early 1980s. The prominence of CB radio grew in Britain partly due to the success of novelty songs like C.W. McCall's "Convoy" and

2503:, up to present time, the use of 27 MHz CB is still banned since the Marcos regime banned it in 1980s. Before it was banned, they use the same allocation as the US. A few operators still illegally utilize the 40 CB channels. 2544:

mean that only the worst offenders are sanctioned, which makes legitimate operation on the citizens band unreliable. Most offenders are not caught for interfering with other CB users; often, their self‑modified equipment generates

986:, CB radios were first introduced about 1977 when some transceivers were imported illegally from Australia, Japan and the United States. The dates are hard to confirm accurately, but early use was known around large cities such as 2789:

propagation, and the operator is said to be "shooting skip". CB operators have communicated across thousands of miles and sometimes around the world. Even low-power 27 MHz signals can sometimes propagate over long distances.

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that time in Australia, licensed ham operators and Emergency Services still used the 11 meter band which was not yet available for CB use. Multiple CB clubs had formed by this time, which assigned call signs to members, exchanged

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Operation on frequencies above or below the citizens band (on the "uppers" or "lowers") is called "freebanding" or "outbanding". While frequencies just below the CB segment (or between the CB segment and the amateur radio

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Legal (short‑range) use of CB radio is sometimes impeded by users of illegal high‑power transmitters, which can be heard hundreds of miles away. The other problem with short‑range CB use is propagation; during long‑range

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RF gain: Adjusts the RF amplifier gain of the receiver; used to reduce received background noise, and to reduce "clipping" due to over-amplification of already-strong signals (for example, when the receiver is near the

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newer radios, the modification may be as simple as disconnecting a jumper wire or a diode. Many types of amateur transceivers may be found on CB and freeband, ranging from full-coverage HF transceivers to simpler

365:(debuted in 1977) helped cement CB radio's status as a nationwide craze in the United States over the mid- to late-1970s. The phenomenon also inspired several popular and country music songs in 1975 and 1976: 2880:

A callbook is a directory of radio station call signs. Originally a bound book that resembled a telephone directory, it contains the name and addresses of radio stations in a given jurisdiction (country).

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to make the antenna impedance the same as a physically longer antenna. The loading coil may be on the bottom, middle, or top of the antenna, while some antennas are wound in a continuously loaded helix.

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are allowed on channels 18 and 23 . Paging is permitted on channel 1 (26.965 MHz) and channel 80 (26.955 MHz) is the recommended call channel for Czech CB radio operators.

974:. American CB licensees were initially required to apply for a temporary license to operate in Canada. In April 1977, the service was expanded to the same 40 channels as the American service. 1107:

is legal in the UK, although not widely used. Internet gateway stations are also beginning to appear; although illegal on 27 MHz, these units are connected to other CB stations around the world.

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On 1 April 2010 the MCMC (Malaysian Communications and Multimedia Commission) released a new regulation and later on 2017. This includes a new UHF PMR 446 MHz allocation: an eight-channel

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has an additional 40 channels between 27.60125 and 27.99125 MHz, also making 80 channels in total. Before CEPT, most member countries used a subset of the 40 U.S. channels.

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The maximum power allowable on the MPT 1320 27/81 system was 4 watts (in common with the American system), although initially radios were equipped to reduce output power by 10

1541:* Channels 3, 7, 11, 15, and 19 have adjacent "hidden" channels (see below); channels 23, 24, and 25 are numbered out-of-order for their frequency allocations in the United States. 1110:

Although the use of CB radios in the UK is limited they are still in use, especially with the farming community, truckers, off-roaders and mini-cab services. The widely used channel for the

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Personal Mobile Radio 446 MHz (Analog PMR446) with frequencies from 446.00625 to 446.09375 MHz (12.5 kHz spacing) FM with 0.5 watt power output, and 16 channels for

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electronics allowed the weight, size, and cost of the radios to fall, giving the public access to a communications medium previously only available to specialists. CB clubs were formed; a

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in addition to the "standard" 40 channel 26.965–27.405 MHz frequency plan for a total of 80 HF CB channels. New Zealand has adopted the Australian UHF CB System as well.

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the first letter («C») is indicated by a grid that contains a set of 40 channels. If the first letter is not specified, it is considered that it is («C»). For example, (C9EF, 9EF)

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Telecommunications, Government of Canada, Innovation, Science and Economic Development Canada, Office of the Deputy Minister, Spectrum, Information Technologies and (27 August 2002).

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27 MHz band, since the 1970s and continuing today. Most of the 460–470 MHz band was reassigned for business and public-safety use; CB Class A is the forerunner of the

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designed to have a mobile whip screwed on top (a full-length, quarter-wave steel whip is preferred) and mounted on a mast. The ground radials replace the vehicle body (which is the

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activity, the band can remain open to much of the world for long periods of time. During low sunspot activity it may be impossible to use skywave at all, except during periods of

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technical standards. Although licenses may be required, eligibility is generally simple. Some countries also have personal radio services in the UHF band, such as the European

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and often has a spring-and-ball mount to enhance its flexibility when scraping or striking overhead objects. Where a nine-foot whip is undesirable, shorter antennas include

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published the first callbook in the United States in 1909. Today, the primary purpose of a callbook is to allow radio operators to send a confirmation post card, called a

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authorizes a similar allocation, with 40 channels from 26.965 to 27.405 MHz and another 40 channels from 26.565 to 26.955 MHz in regular 10-kHz steps.

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hand-held units became affordable with the use of transistors. Early receivers did not cover all the channels of the service; channels were controlled by plug-in quartz

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in 4FSK mode and a power output of 0.5 watt. An unofficial citizens band radio club in Malaysia is the "Malaysia Boleh Citizen Radio Group", known as "Mike Bravo" (

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channel plan at 476-477 MHz On 10 November 1980, the Indonesian Directorate General of Posts and Telecommunications issued another decree establishing RAPI (

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problems with channel 9. Many CBers called channel 19 "the trucker's channel". The FCC originally restricted channel 11 for use as the calling channel.

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at the time) which was opposed by amateur radio organizations and others. There are several other classes of personal radio services for specialized purposes (such as

3279: 2638: 3896: 2556:

The maximum legal CB power output level in the U.S. is 4 watts for AM (un-modulated carrier; modulation can be four times the carrier power, or 16 watts

4414: 2903:

During the 1970s and 1980s peak years of CB radio, many citizens band-themed magazines appeared on newsstands. Two magazines that dominated the time period were

771:), since "CB" could not be used. After July 1, 1977, the club changed its name to Citizens Band Two Way Communication Club (CBTCC). Other early clubs were "LV" ( 2921:, which had the same editor under a different publisher beginning in 1982. It covered hobby radio as well as CB. The same publisher produced a magazine called 3216: 594:

base stations at their search and rescue stations. The Coast Guard stopped this practice in the late 1980s and recommends VHF Marine Band radios for boaters.

1114:

is channel 11. The normal calling and truckers' channel is channel 19, although many truck organisations and groups use other channels to avoid abuse.

6059: 4878: 4044: 1805:

have unique allocations compared to any other country. New Zealand authorizes use of their New Zealand specific 40 channel 26.330–26.770 MHz

1092:(to 0.4 watts) if the antenna was mounted more than 7 meters (23') above ground level. The power-reduction switch is also useful in reducing 416: 3855: 970:

The General Radio Service was authorized in 1962. Initially, CB channels 1–3 remained allocated to amateur radio and channel 23 was used by

545:

area in one of his many voice characters. He appeared in an interview (with clips having fun talking to children on his home CB radio station) in the

1046:

Personal Mobile Radio 446 MHz (Digital PMR 446). Frequencies for Digital PMR 446 are from 446.103125 to 446.196875 MHz with 6.25 kHz

572:

Initially, the FCC intended for CB to be the "poor man's business-band radio", and CB regulations were structured similarly to those regulating the

3119: 1077:

using FM were allocated at 27 MHz plus 20 channels on 934 MHz (934.0125–934.9625 MHz with 50 kHz spacing). CB's inventor,

2838:

modified to transmit out of band, which is illegal in some countries. Older amateur radios may require component changes; for instance, the 1970s

6052: 4331: 4249: 1111: 3097: 3137: 1784:

behind it – an optional designation («E») for "European" or mandatory («R») for "Russian" size frequency nets. For example, (C9EF, C9F, C9RF)

34:

Typical 1980s CB radio intended for use at a fixed location and used with outdoor antenna. "Base stations" are usually operated on household

5586: 5558: 5553: 4578: 561:, and channel 19 west of the Mississippi; channel 19 then became the preferred highway channel in most areas, as it did not have 4442: 6085: 7171: 7148: 4463: 4363: 3466: 316:

height, distance communications, licensing, call signs, and transmitter power). Individual licensing came to an end on April 28, 1983.

303:

Their use spread further into the general population in the US in the middle of the 1970s. Originally, CB (named Citizens Radio by the

3647: 2483:

authorizes 80 channels as well (same as the German 80-channel plan). As in Germany, digital modes are allowed on certain frequencies.

4111: 3952: 1781:

hereinafter ("9") – the channel number. Sometimes less than 10 channels are designated 2 digits. For example, (C9EF, C09EF)

1551:

boats. It is an unofficial practice to name these channels by their next lower standard channel number along with a suffix "A" (

3819: 2872:

Amateur Radio operator within his / her license privileges is legal, as long as all FCC regulations for Amateur Radio are followed.

2521:; those needing a simple radio for professional use (e.g., tradesmen) have moved on to "dot-color" Business Band radios and the VHF 7122: 4015: 3337: 3324: 452: 4157: 17: 5670: 1163: 387:

in January 1976, to #2 in the UK Charts during the spring of 1976, and inspiring the 1978 film of the same name. In the UK,

3532: 3488: 7452: 7138: 6075: 5580: 3386: 422: 2600:

receivers (using one or two conversion stages) were the norm in good-quality equipment, although low-cost toy-type units used

7181: 7143: 6564: 6559: 5575: 5565: 5545: 5347: 4545: 3990: 3769: 245:. An unsuccessful petition was filed in 1973 to create a CB Class E service at 220 MHz, (part of the amateur radio 4191: 319:

The increased use of CB radios in 1970s had made its way into films, television, and music by the late 1970s. Films such as

117:

radio). In many countries, CB operation does not require a license and may be used for business or personal communications.

5910: 3444: 1676: 209:

The citizens band radio service originated in the United States as one of several personal radio services regulated by the

4712: 6113: 5920: 5637: 5570: 5416: 4477: 3889: 7281: 5342: 4309: 4214: 2601: 1043: 4511: 4407: 3305: 7417: 7402: 5973: 5781: 5436: 4141: 4082: 3424: 3175: 2867:

Amateur Radio transceivers. Marketing, import and sale of such radios is illegal if they are distributed as anything

2541: 1860:

has the usual 40 channels at 27 MHz, plus a unique 60-channel allocation from 142.050 to 143.525 MHz.

1702: 1171: 1144: 304: 210: 1684: 507:'s "C.B. Savage", a gay-themed country novelty song about truckers plagued by a mysterious effeminate CB aficionado. 7505: 5221: 4769: 4571: 4279: 2961: 2743:

only practical on large trucks. Two antennas may be installed for symmetrical appearance, with only one connected.

2605:

of crystals (typically 14). The next improvement came during the mid-1970s; crystal synthesis was replaced by

125:" button on their radio, which turns on their transmitter. Users on a channel must take turns transmitting. In the 3220: 6422: 6123: 5332: 4016:"Arrêté du 31 mars 1992 relatif aux caractéristiques techniques et aux conditions d'exploitation des postes C.B." 3550: 523: 455:" is a sequel to "Convoy", recorded by C.W. McCall. It was released in late spring 1976, and peaked at #1 in the 7601: 7533: 7158: 7153: 7127: 6103: 5327: 1680: 1063: 2647:: Some transceivers can drive an external speaker and act as a low-power public address system, or "bullhorn". 5890: 5733: 5352: 2609:

technology using ICs, enabling 40 channel sets with only one crystal (10.240 MHz). Almost all were

562: 191: 42:

system if operated in a vehicle or from an emergency battery source. Shown with Astatic brand D-104 desk mic

7596: 7447: 6879: 6869: 6803: 6696: 6371: 6339: 6108: 6089: 5771: 5718: 5627: 5388: 5285: 4828: 4623: 4595: 3864: 2982: 2760: 2484: 1093: 494: 333: 230: 98: 3929: 491:

lyrics are capitalizing on the fad. The record peaked at #94 in Billboard's Hot 100 in the spring of 1976.

73:, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using 7382: 7377: 6943: 6285: 6133: 5940: 5786: 5663: 5617: 5124: 4564: 3015:

The terms "interstation" and "intrastation" appear in the FCC's Part 95 rules from that time period.

1007: 806:

Source: Several channels are allocated for maritime use in Australia. Australia also permits the use of

7616: 7437: 7288: 6760: 5978: 5476: 5398: 5337: 5044: 2706: 2614: 2561: 2470:

allows use of the "low channels" for a total of 80 channels (26.515 MHz to 27.405 MHz).

1715: 1132: 289: 256:

During the 1960s, the service was used by small businesses (e.g., electricians, plumbers, carpenters),

158: 3801: 3603: 3133: 775:) and "WB" (named after Wayne Britain). Members of these clubs are still active, and have also become 46: 6988: 6745: 6739: 6230: 6208: 6128: 6003: 5834: 5796: 5248: 5209: 5054: 4954: 4883: 4816: 4643: 3265: 1814: 296:) used CB radios to locate service stations with better supplies of fuel, to notify other drivers of 261: 4241: 2584:; solid-state transmitters were not widely available until 1965, after the introduction of RF power- 2496:

allocated to a public safety network shared with police, fire and EMS services in Ontario, Canada).

7519: 7348: 7260: 7106: 7050: 6968: 6797: 6722: 6616: 6028: 5844: 5607: 4849: 4784: 4737: 4697: 4385: 3089: 2860:(FM) CB gear to escape the crowded AM channels. American AM gear has also been exported to Europe. 2665: 1665: 945: 553:

a quarter-century later, CB allowed people to get to know one another in a quasi-anonymous manner.

448:

was another early 1976 hit song based on the CB-ing truckers myth, reaching the national US charts.

348: 70: 515:

Image of Citizens Radio license 1972 issued by the United States Federal Communications Commission

7392: 7302: 6830: 6389: 5988: 5935: 5738: 5446: 5431: 5275: 5226: 5149: 5049: 4727: 4613: 4608: 3702: 2937:

spawned several other popular publications, including a communications and scanning magazine and

2596:, with one of several operating frequencies selected by a panel control in more expensive units. 2522: 1669: 1559:

standard channel 11 (at 27.085 MHz) is used to provide for part of European railroad's

1074: 644: 238: 102: 7611: 7477: 7372: 7267: 7096: 7045: 6656: 6574: 6191: 5698: 5656: 5368: 5154: 4969: 4914: 4909: 4722: 4687: 4438: 2917: 2798: 1735: 776: 114: 90: 4129: 7412: 7204: 7197: 7015: 6874: 6787: 6681: 6549: 6301: 6251: 6219: 5993: 5270: 5074: 5039: 4959: 4939: 4861: 4749: 4670: 4540:(First Anchor Books Edition; "Complete and uncut edition" ed.). New York: Anchor Books. 4244:. Office of the Deputy Minister, Spectrum, Information Technologies, and Telecommunications. 3829:. Communication and Multimedia Act. 1998. P.U.(B) 416 Jil. 48, No. 22(e). Act 588. 2933:

was produced monthly from mid-1977 and continuing publication through until the early 1990s.

2644: 1028: 438: 321: 225: 4603: 7555: 7442: 7246: 6953: 6671: 6378: 5998: 5849: 5713: 5708: 5184: 5144: 5114: 4871: 4806: 4628: 3775:. TRC 40. Government of Canada Department of Communications. 1 January 1977. Archived from 3458: 3360: 2857: 2746:

Another mobile antenna is the continuously loaded half-wave version. They do not require a

2692: 2610: 2518: 2512:

main office. While some users have moved on to other radio services, CB is still a popular

1787:

end – the used modulation («FM») or («F»), («AM») or («A»). e.g. (C9EFM, C9EF, C9EAM, C9EA)

1719: 1128: 1124: 624: 611: 456: 355: 234: 221: 150: 146: 94: 3960: 2681: 2553:

which cause interference to services outside the citizens band and to consumer equipment.

8: 7397: 7274: 7081: 6978: 6728: 6544: 6456: 6450: 6355: 6291: 6269: 6044: 6033: 5880: 5766: 5194: 5134: 4893: 4855: 4653: 4638: 2700: 2657: 2557: 1867:, CB channels were upgraded from 23 to 60 channels starting in 1979 and again in 1980 to 632: 468: 401:

covered the song with an altered UK song text, released as "Convoy GB" under the moniker

154: 7606: 7526: 7512: 7334: 7218: 7091: 7071: 7020: 6963: 6776: 6704: 6676: 6666: 6631: 6621: 6595: 6274: 6237: 5421: 5378: 5309: 5179: 5109: 5084: 5019: 4866: 4587: 4165: 3391: 3310: 3033:

Channels 23 , 24 , and 25 are not on the same radio frequencies in the

2632: 2593: 478: 342: 3622:"Radiocommunications (Maritime Ship Station — 27 MHz and VHF) Class Licence 2015" 3536: 7483: 7341: 7253: 7211: 6958: 6554: 6327: 6167: 5900: 5461: 5383: 5297: 5280: 5243: 5089: 4919: 4888: 4754: 4648: 4541: 4457: 4357: 4137: 3621: 3506: 3420: 3396: 3171: 3113: 3046:

RCRS was formerly known as the Class C Citizens Radio Service until the 1976 changes.

2949: 2827: 2815: 2661: 2606: 2537:

conditions local signals are inaudible due to reception of multiple distant signals.

811: 760: 615: 558: 437:— enjoyed a brief run of national popularity with the song when it became popular in 381: 327: 273: 5129: 3568: 7432: 7327: 7320: 7225: 6983: 6948: 6938: 6928: 6850: 6138: 6118: 5885: 5466: 5426: 5406: 5373: 5302: 5260: 5174: 5029: 5014: 4989: 4964: 4924: 4774: 4633: 4618: 3191: 2987: 2883: 2688: 2565: 1082: 807: 801: 764: 586: 308: 292:, and fuel shortages and rationing were widespread. Drivers (especially commercial 3982: 3776: 7422: 7239: 7232: 6933: 6715: 6709: 6661: 6646: 6604: 6569: 6478: 6462: 6400: 6202: 6173: 6018: 5968: 5094: 4949: 4717: 4692: 4680: 4187: 3492: 3064:

The term "outbanding" was introduced by Kneitel in the August 1979 issue of

2597: 1078: 1047: 639:

way to more compact CB radios with far more features afforded in older models.

487: 394: 347:(1978), made heavy reference to the phenomenon, as did television series such as 313: 285: 246: 214: 4218: 3440: 3006:

Channels 10–14 and 23, after channel 9 was reserved for emergency use.

1099:

CB radio in the UK was deregulated in December 2006 by the regulatory body

7355: 7295: 7035: 6973: 6920: 6835: 6765: 6488: 6394: 6224: 5839: 5292: 5164: 5139: 5099: 5069: 4944: 4779: 4732: 4707: 4665: 2778: 2540:

In the United States, the number of users and law enforcement financing by the

2488: 2480: 1806: 1749: 772: 250: 138: 134: 82: 39: 4074: 511: 7590: 7473: 7387: 7132: 7010: 6905: 6808: 6750: 6686: 6651: 6610: 6503: 6444: 6333: 5854: 5824: 5693: 5679: 5441: 5214: 5204: 5119: 5009: 5004: 4994: 4979: 4801: 4660: 4481: 4248:. Government of Canada. Innovation, Science and Economic Development Canada. 3758:. Vol. 10, no. 2. New York, NY: Davis Publications. pp. 55–56. 2970: 2966: 2941:

magazine, produced over several decades and running to some 18 volumes.

2835: 2811: 2625: 2589: 2550: 1148: 1039: 619: 573: 426: 412: 388: 377: 126: 110: 74: 2697:

Echo mic: Deliberately introduces distortion and echo into transmitted audio

7468: 6813: 6641: 6534: 6513: 6438: 6306: 6279: 6179: 5930: 5829: 5819: 5319: 5159: 5104: 5034: 4999: 4934: 4833: 4823: 4675: 4533: 4503: 4301: 3857:

Communications and Multimedia Act 1998 Class Assignments No. 1 of 2010

2945: 2839: 2747: 2735: 2726: 2457: 1104: 603: 482: 398: 373: 369: 293: 257: 122: 2580:

At the beginning of the CB radio service, transmitters and receivers used

1555:). For example, channel "11A" is 27.095 MHz, spaced 10 kHz 54: 7427: 7086: 7076: 7040: 6493: 6411: 6406: 6384: 6345: 6296: 6023: 6013: 6008: 5519: 5169: 5079: 5064: 5024: 4984: 4843: 3754:

Spinello, Matt P. (July–August 1972). "Touring Canada with your CB rig".

3507:"Radiocommunications (27 MHz Handphone Stations) Class Licence 2015" 2852: 2794: 2581: 2500: 1798: 542: 472: 430: 408: 4271: 2654:

NOR / 9 / 19: Quickly tunes preset channels for calling or emergency use

2564:, as measured at the transmitter antenna connection. However, external 7407: 7101: 7002: 6636: 6433: 6365: 6161: 5524: 5231: 4929: 4838: 4794: 4764: 4742: 4105:"An Indonesian government decision regarding CB, with frequency charts" 3414: 2926: 2782: 2674: 2585: 1560: 995: 538: 534: 519: 498: 419:

from 1975, which peaked #10 in the US charts and #8 in Canadian charts.

297: 3983:"Citizens Band (CB) Scanner Frequencies and Radio Frequency Reference" 2620:

Most CB radios sold in the United States have the following features:

1748:

has 40 additional channels at 26 MHz for a total of 80. The

7487: 7055: 7030: 6900: 6895: 6840: 6820: 6770: 6428: 6360: 6244: 6214: 5983: 5509: 4974: 4789: 4556: 2864: 2844: 2703:: Uses an electrostatic method to convert sound to electrical signals 2464:

is no longer required to purchase or use a CB radio in South Africa.

1857: 983: 768: 550: 530: 86: 1742:

European Conference of Postal and Telecommunications Administrations

1654: 6539: 6498: 6321: 6311: 6197: 5925: 5870: 5791: 5504: 5494: 5411: 5236: 5059: 3575:. Australian Citizens Radio Monitors (South Australia) Incorporated 2953: 2888: 2641:(ALC): Limits the transmitter modulation level to reduce distortion 2546: 999: 662: 607: 591: 504: 361: 269: 265: 242: 166: 35: 3654:. Australian Communications and Media Authority. 17 September 2018 3554: 1817:

in the 348 MHz, 420–422 MHz and 903–904 MHz bands.

635:) radio an attractive alternative to the overcrowded CB channels. 30: 7025: 6483: 6259: 6185: 5945: 5875: 5776: 5723: 5499: 5484: 4702: 2892: 2786: 2781:

spectrum (3–30 MHz) can be refracted by charged ions in the

2772: 2534: 2473: 2467: 1745: 1089: 1018:) as the official citizens band radio organization in Indonesia. 991: 987: 628: 5648: 3921: 3260:""I can't drive 55": The economics of the CB radio phenomenon". 6910: 6529: 6508: 6416: 6350: 5950: 5915: 5801: 5748: 5743: 5728: 5529: 5489: 4811: 4204:

gives the history of one US manufacturer's line of CB equipment

3863:. Notification of Issuance of Class Assignments. Archived from 3242:

Hurd, Peter M. (May–June 1978). "Amateur Radio and MARS News".

1864: 1760: 1756: 1156: 1011: 959: 818:

List of 27 MHz Marine Radio channels for use in Australia

788: 670: 549:

television episode about CB radio in 1978. Similar to Internet

201: 174: 130: 106: 3055:

Channels 24 , 25 , 52 , 53 , 76

627:

transmission, lack of interference by distant stations due to

602:

CB has lost much of its original appeal due to development of

6864: 6825: 6733: 6316: 6264: 5514: 5451: 4759: 2721: 2513: 2461: 1802: 1100: 1010:

was added in 1994, along with allowing use of the Australian

1003: 971: 312:

widespread further disregard of the regulations (such as for

78: 6755: 6626: 5456: 3805: 1791:

An example of correct designations: C9EF, C9EA, C9RF, C9RA

142: 50:

Cobra 18 WX ST II mobile CB radio with microphone

6074: 3607: 618:

for long-distance communications due to the 11–year

233:(GMRS). CB Class B is a more distant ancestor of the 6859: 3733:

Canada Radio-television and Telecommunications Commission

2751: 1842:

27.144 MHz – Japanese CB Channel 8 – Calling Channel

1143:

The standard channel numbering is harmonized through the

4377: 2948:'s story The Stand, Ralph Brentner's radio signal from 1853:

27.152 MHz – Japanese Remote Control R/C Frequency

1850:

27.136 MHz – Japanese Remote Control R/C Frequency

1847:

27.048 MHz – Japanese Remote Control R/C Frequency

1081:, made the ceremonial first legal British CB call from 475:(1976), peaked in the UK charts at #12 in early summer. 391: 4302:"QTH.COM: FCC information regarding Illegal CB Radios" 2763:

for a mobile whip in a typical vehicle installation).

939:

Commercial fishing operations (ship–shore, ship–ship)

928:

Commercial fishing operations (ship–shore, ship–ship)

4010: 4008: 3024:

except channel 9, which was usually colored red.

917:

Safety and rescue operations (ship–shore, ship–ship)

678:

List of 27 MHz CB Channels for use in Australia

260:

and radio hobbyists. By the late 1960s, advances in

2628:: Reduces background noise (such as spark ignition) 1164:

channel assignments for CB use in the United States

580: 161:. Illegal amplifiers to increase range are common. 4134:Trucking: Tractor-Trailer Driver Handbook/Workbook 4045:"(CB Rule 7) On what channels may I operate?" 4005: 3087: 2785:. Refracting signals off the ionosphere is called 2725:Typical center-loaded mobile CB antenna. Note the 2660:: Meter used to monitor reflected power caused by 851:Distress, urgency, safety and calling (secondary) 3593:* GL 226 (VK3PJB) ex-Secretary GL Club, Australia 2863:"Export radios" are sold in the United States as 7588: 4526: 3415:Chilton Automotive Editorial Department (1977). 3387:"Back in view, a First Lady with her own legacy" 2804: 840:Distress, urgency, safety and calling (primary) 767:enthusiasts. The club used the prefix "GL" (for 3410: 3408: 3406: 3770:"Licensing of General Radio Service Equipment" 3419:. Radnor, Pennsylvania: Chilton Book Company. 3384: 2729:, which shortens the antenna's overall length. 2709:: Uses two elements to reduce background noise 1729: 862:Commercial operations (ship–shore, ship–ship) 631:, and consistent communications made the VHF ( 541:" as his handle and talking on the air in the 501:(1976) charted in the UK at #6 in late summer. 6060: 5664: 4572: 3161: 3159: 3157: 3155: 895:Specific events only (ship–shore, ship–ship) 533:was also an active CB operator, often using " 4231:FCC regulations Part 95 Subpart D. 3827:Notification of Issuance Of Class Assignment 3403: 3118:: CS1 maint: multiple names: authors list ( 405:, chart-peaking at #4 in the spring of 1976. 205:A QSL card issued by a US CB station in 1963 6086:Federal Motor Carrier Safety Administration 5587:Global telecommunications regulation bodies 3303: 2965:added CB radio coverage to its coverage of 1871:(from 26.965 MHz to 27.855 MHz). 1683:. Unsourced material may be challenged and 949:Hand-held CB transceiver; antenna not shown 89:band. Citizens band is distinct from other 7172:Glossary of the American trucking industry 7149:National Motor Freight Traffic Association 6067: 6053: 5671: 5657: 5623: 4579: 4565: 4158:""Omnibus" Amateur Radio Report and Order" 3306:"Fading CB craze signals end to licensing" 3152: 359:(debuted in 1979) and the animated series 7123:American Moving & Storage Association 3170:. Commack, New York: CRB Research Books. 2684:: Uses magnetic coil and permanent magnet 1703:Learn how and when to remove this message 967:gear while traveling across the border. 782: 141:, transmitter power is limited to 4 3753: 2720: 1545: 1117: 944: 510: 241:is another two-way radio service in the 200: 53: 45: 29: 3293:– via Google News Archive Search. 3165: 2969:and still remains the only magazine in 2929:stores in the mid-1990s. In Australia, 1839:27.120 MHz – Japanese CB Channel 7 1836:27.112 MHz – Japanese CB Channel 6 1833:27.088 MHz – Japanese CB Channel 5 1830:27.080 MHz – Japanese CB Channel 4 1827:27.040 MHz – Japanese CB Channel 3 1824:26.976 MHz – Japanese CB Channel 2 1821:26.968 MHz – Japanese CB Channel 1 884:Non-commercial operations (ship–shore) 873:Non-commercial operations (ship–shore) 755:The first CB club in Australia was the 585:Since the price of CB was dropping and 435:Cledus Maggard & The Citizen's Band 14: 7589: 7139:International Brotherhood of Teamsters 6076:Trucking industry in the United States 4586: 4514:from the original on 27 September 2017 4462:: CS1 maint: archived copy as title ( 4362:: CS1 maint: archived copy as title ( 4282:from the original on 10 September 2017 4242:"RIC-18 — General Radio Service (GRS)" 4081:. UHF CB Australia - New Zealand PRS. 4075:"Repeater Locations & Information" 4037: 3993:from the original on 14 September 2015 3950: 3932:from the original on 14 September 2017 3671: 3669: 3551:""Aussie" 18 Channel Radio Guide" 3304:Holsendolph, Ernest (April 28, 1983). 3090:"RIC-18 — General Radio Service (GRS)" 2635:switch: Selects weather-radio receiver 906:Non-commercial operations (ship–ship) 795: 446:Shad O'Shea & the 18 Wheelers 7573:Note: Defunct companies are shown in 7144:National Motor Freight Classification 6560:Utility Trailer Manufacturing Company 6048: 5652: 4560: 4388:from the original on 23 February 2018 4127: 4055:from the original on 14 February 2009 3890:"Class Assignment No. 1 of 2017" 3836:from the original on 30 November 2010 3255: 3253: 3140:from the original on 28 November 2010 453:'Round the World with the Rubber Duck 380:" (1975), which climbed to #1 in the 5633: 4532: 4312:from the original on 9 November 2017 4217:. New Company Driver. Archived from 3902:from the original on 19 January 2018 3804:. Indonesian DX Club. Archived from 3469:from the original on 4 December 2015 3459:"Citizens Band Radio Service (CBRS)" 3241: 3100:from the original on 12 January 2008 1681:adding citations to reliable sources 1648: 1138: 169:commonly called a Beam or a Yagi. 6114:Federal Bridge Gross Weight Formula 3666: 3385:Tweed, Michael (31 December 2006). 3325:James Wesley Huguely=Cledus Maggard 2691:element; rugged, low-cost but high- 597: 526:, used the CB handle "First Mama". 279: 24: 4194:from the original on 24 April 2010 4085:from the original on 12 March 2018 3447:from the original on 14 June 2011. 3338:"Gay ballad is joined by "Savage"" 3250: 3219:. FCC Part 95. Archived from 2712:Power mic: An amplified microphone 307:as of 1972) required the use of a 25: 7628: 7403:Eighteen Wheels and a Dozen Roses 5782:Common traffic advisory frequency 5678: 4252:from the original on 15 June 2017 4128:Adams, Alice (28 November 2005). 3358: 2956:was able to be received over CB. 2613:-only, although there were a few 2542:Federal Communications Commission 1563:radio communication with trains. 1071:Laurie Lingo & The Dipsticks’ 1057: 305:Federal Communications Commission 211:Federal Communications Commission 7506:18 Wheeler: American Pro Trucker 5632: 5622: 5613: 5612: 5601: 5222:Free-space optical communication 4344:from the original on 6 July 2010 4025:from the original on 1 July 2017 3951:Rohrer, Finlo (14 August 2006). 3729:"RIC-18 - General Radio Service" 2962:National Communications Magazine 1653: 763:in 1967 and consisted mainly of 581:Boating and the U.S. Coast Guard 403:Laurie Lingo & the Dipsticks 288:, the U.S. government imposed a 185: 81:(or the 11-m wavelength) in the 58:Cobra 50 WX ST Handheld CB Radio 6124:International Registration Plan 4496: 4470: 4445:from the original on 2015-04-02 4431: 4420:from the original on 2015-02-15 4400: 4370: 4324: 4294: 4264: 4234: 4225: 4207: 4180: 4150: 4121: 4097: 4067: 3975: 3944: 3914: 3882: 3848: 3820:"Personal Radio Service Device" 3812: 3794: 3762: 3747: 3721: 3695: 3640: 3614: 3596: 3587: 3561: 3543: 3525: 3499: 3481: 3451: 3441:"Radio Information for Boaters" 3433: 3378: 3352: 3340:. Billboard. September 13, 1976 3330: 3318: 3314:. Section A, page 19. 3058: 3049: 3040: 3027: 3018: 3009: 3000: 1168: 524:First Lady of the United States 7534:Big Rigs: Over the Road Racing 7159:SmartWay Transport Partnership 7154:National Private Truck Council 7128:American Trucking Associations 4215:"Learn the basics of CB radio" 3297: 3272: 3235: 3209: 3184: 3126: 3081: 2506: 1064:CB radio in the United Kingdom 1016:Radio Antar Penduduk Indonesia 757:Charlie Brown Touring Car Club 38:but can also from a vehicle's 13: 1: 5891:Maritime mobile amateur radio 4478:"www.dx27.net - QRZ Database" 3648:"Marine radio qualifications" 3443:. United States Coast Guard. 3075: 2805:Freebanding and export radios 2575: 563:adjacent-channel interference 290:nationwide 55 mph speed limit 192:CB radio in the United States 6880:United States Postal Service 6804:American Lamprecht Transport 6109:Electronic on-board recorder 6090:Economy of the United States 6034:Voting (diversity combining) 5772:Aircraft emergency frequency 5719:General Mobile Radio Service 5608:Telecommunication portal 5389:Telecommunications equipment 3264:. Vol. 15, no. 3. 2983:Citizens Band radio in India 2834:Many freeband operators use 977: 750: 655: 650: 231:General Mobile Radio Service 7: 7383:Bonnie Jean (Little Sister) 7378:Big Wheels in the Moonlight 6944:Gentle Giant Moving Company 6134:Motor carrier safety rating 6104:Commercial driver's license 5787:Mandatory frequency airport 5125:Alexander Stepanovich Popov 3683:. Transport Safety Victoria 3628:. Commonwealth of Australia 3513:. Commonwealth of Australia 3134:"27 Megacycle History" 2976: 2875: 2716: 2624:Automatic noise limiter or 1730:Country-specific variations 1021: 462:Bubbling Under Hot 100 272:, similar to those used in 268:language evolved alongside 177:and the Australian UHF CB. 165:connected to a directional 10: 7633: 7438:Roll On (Eighteen Wheeler) 7289:The Great Smokey Roadblock 5979:Automatic vehicle location 4829:Telecommunications history 3707:www.marinerescuensw.com.au 3681:transportsafety.vic.gov.au 3604:"[no title cited]" 3280:"The Southeast Missourian" 2770: 2766: 2750:to present a near-50 2707:Noise-canceling microphone 2568:are often used illegally. 1875:CB Radio Channels (ANATEL) 1733: 1644: 1133:single-sideband modulation 1061: 799: 196: 189: 180: 7568: 7543: 7497: 7461: 7365: 7312: 7189: 7180: 7167: 7115: 7064: 7001: 6919: 6888: 6849: 6786: 6746:Old Dominion Freight Line 6740:New England Motor Freight 6697:Less than truckload (LTL) 6695: 6594: 6587: 6522: 6471: 6154: 6147: 6129:Motor Carrier Act of 1980 6096: 6082: 6004:Dynamic range compression 5959: 5921:Dual-tone multi-frequency 5899: 5863: 5835:Professional mobile radio 5810: 5797:Single Frequency Approach 5757: 5686: 5596: 5538: 5475: 5437:Public Switched Telephone 5397: 5361: 5318: 5259: 5249:telecommunication circuit 5210:Fiber-optic communication 5193: 4955:Francis Blake (telephone) 4902: 4750:Optical telecommunication 4594: 3327:Retrieved 9 February 2021 3266:The Independent Institute 3192:"Citizen Band (CB) Radio" 953: 787:With the introduction of 759:(CBTCC), which formed in 18:Citizens' band radio 7520:American Truck Simulator 6889:Regional parcel carriers 6798:Access America Transport 6723:Consolidated Freightways 6029:Radiotelephony procedure 5845:Specialized Mobile Radio 5348:Orbital angular-momentum 4785:Satellite communications 4624:Communications satellite 4049:frwebgate.access.gpo.gov 3168:Tomcat's Big CB Handbook 2993: 2898: 2560:) and 12 watts for 796:27 MHz marine radio 71:land mobile radio system 27:Land mobile radio system 7268:Smokey & the Bandit 6831:Total Quality Logistics 5739:Multi-Use Radio Service 5227:Molecular communication 5050:Gardiner Greene Hubbard 4879:Undersea telegraph line 4614:Cable protection system 3553:. ACBRO. Archived from 3361:"Rod Hart - Breakeroo!" 2777:All frequencies in the 2639:Automatic level control 2523:Multi-Use Radio Service 1815:personal radio services 1034:Warta Kerajaan Malaysia 777:amateur radio operators 239:Multi-Use Radio Service 7373:A Tombstone Every Mile 6657:Patriot Transportation 5811:Land-based commercial 5699:Amateur radio repeater 5369:Communication protocol 5155:Charles Sumner Tainter 4970:Walter Houser Brattain 4915:Edwin Howard Armstrong 4723:Information revolution 3756:Elementary Electronics 3735:. Government of Canada 3626:www.legislation.gov.au 3535:. ACRM. Archived from 3511:www.legislation.gov.au 3491:. ACRM. Archived from 2918:Popular Communications 2799:Sporadic-E propagation 2730: 1736:Personal radio service 950: 783:Competing technologies 516: 206: 91:personal radio service 59: 51: 43: 7602:1970s fads and trends 7413:Girl on the Billboard 7016:Bowlin Travel Centers 6788:Third-party logistics 6523:Trailer manufacturers 6302:Hyundai Motor America 5813:and government mobile 5760:(aeronautical mobile) 5343:Polarization-division 5075:Narinder Singh Kapany 5040:Erna Schneider Hoover 4960:Jagadish Chandra Bose 4940:Alexander Graham Bell 4671:online video platform 3539:on 17 September 2006. 3495:on 17 September 2006. 3417:Chilton's CB Handbook 3166:Kneitel, Tom (1988). 2724: 1546:Intermediate channels 1118:Frequency allocations 948: 514: 433:, who — recording as 322:Smokey and the Bandit 226:amateur radio service 204: 111:Amateur Radio Service 57: 49: 33: 7556:The Rolling Memorial 7443:Six Days on the Road 7393:Drivin' My Life Away 6472:Engine manufacturers 5850:Trunked radio system 5714:Public Radio Service 5709:Family Radio Service 5687:Amateur and hobbyist 5185:Vladimir K. Zworykin 5145:Almon Brown Strowger 5115:Charles Grafton Page 4770:Prepaid mobile phone 4698:Electrical telegraph 4130:"The first CB radio" 3926:my27mhz.blogspot.com 2959:In the early 2000s, 2939:Amateur Radio Action 2858:frequency modulation 2687:Ceramic mic: Uses a 2519:Family Radio Service 1677:improve this section 1129:amplitude modulation 1125:frequency modulation 612:Family Radio Service 429:song made famous by 356:The Dukes of Hazzard 235:Family Radio Service 222:Ultra-high frequency 93:allocations such as 7597:Citizens band radio 7551:Citizens band radio 7398:East Bound and Down 7282:The Gang's All Here 7275:They Drive by Night 7082:J. Harwood Cochrane 6979:Two Men and a Truck 6729:Estes Express Lines 6155:Truck manufacturers 5881:Coast radio station 5767:Air traffic control 5704:Citizens band radio 5135:Johann Philipp Reis 4894:Wireless revolution 4856:The Telephone Cases 4713:Hydraulic telegraph 4117:on 20 January 2016. 3963:on 4 September 2011 3808:on 2 February 2007. 3709:. Marine Rescue NSW 3557:on 13 January 2004. 2973:covering CB radio. 2895:for amateur radio. 2701:Electret microphone 2662:mismatched antennas 1175: 1170:CB Radio Channels ( 1112:Young Farmers' Club 819: 679: 633:Very High Frequency 469:One Piece At A Time 444:"Colorado Call" by 353:(debuted in 1974), 63:Citizens band radio 7513:18 Wheels of Steel 7335:B. J. and the Bear 7072:Frederick W. Smith 7021:Dixie Travel Plaza 6777:Yellow Corporation 6632:FFE Transportation 5864:Marine (shipboard) 5749:UHF CB (Australia) 5333:Frequency-division 5310:Telephone exchange 5180:Charles Wheatstone 5110:Jun-ichi Nishizawa 5085:Innocenzo Manzetti 5020:Reginald Fessenden 4755:Optical telegraphy 4588:Telecommunications 4504:"Sugar Delta Home" 4221:on 1 October 2008. 4019:legifrance.gouv.fr 3987:radioreference.com 3922:"Senarai Keahlian" 3870:on 19 January 2018 3569:"CB Radio History" 3489:"CB Radio History" 3392:The New York Times 3311:The New York Times 3262:Independent Review 3094:strategis.ic.gc.ca 2931:CB Action Magazine 2731: 2682:Dynamic microphone 2602:super-regenerative 1169: 951: 817: 711:Emergency Channel 677: 674:called the FM320. 645:police speed traps 517: 423:"The White Knight" 274:emergency services 207: 77:operating near 27 60: 52: 44: 7617:Radio regulations 7584: 7583: 7564: 7563: 7484:Road Dog Trucking 7342:Ice Road Truckers 7254:Maximum Overdrive 7212:Breaker! Breaker! 6997: 6996: 6583: 6582: 6550:Hyundai Translead 6328:Marmon-Herrington 6168:American LaFrance 6084:Regulated by the 6042: 6041: 5903:Selective calling 5646: 5645: 5384:Store and forward 5379:Data transmission 5293:Network switching 5244:Transmission line 5090:Guglielmo Marconi 5055:Internet pioneers 4920:Mohamed M. Atalla 4889:Whistled language 4547:978-0-385-52885-6 4272:"FCC Enforcement" 4168:on 13 August 2014 4162:cbradiosource.com 3957:BBC News Magazine 3465:. 4 August 2011. 2909:CB Radio Magazine 2828:frequency counter 2793:In times of high 2677:choices include: 2566:linear amplifiers 2485:Internet gateways 2455: 2454: 1713: 1712: 1705: 1642: 1641: 1538: 1537: 1139:Standard channels 943: 942: 812:Marine Rescue NSW 761:Morwell, Victoria 748: 747: 616:radio propagation 559:Mississippi River 328:Breaker! Breaker! 16:(Redirected from 7624: 7577: 7453:The White Knight 7433:Roll On Big Mama 7328:American Trucker 7321:American Loggers 7303:White Line Fever 7187: 7186: 6921:Moving companies 6592: 6591: 6152: 6151: 6139:National Network 6119:Hours of service 6069: 6062: 6055: 6046: 6045: 5960:System elements 5886:Marine VHF radio 5673: 5666: 5659: 5650: 5649: 5636: 5635: 5626: 5625: 5616: 5615: 5606: 5605: 5604: 5477:Notable networks 5467:Wireless network 5407:Cellular network 5399:Types of network 5374:Computer network 5261:Network topology 5175:Thomas A. Watson 5030:Oliver Heaviside 5015:Philo Farnsworth 4990:Daniel Davis Jr. 4965:Charles Bourseul 4925:John Logie Baird 4634:Data compression 4629:Computer network 4581: 4574: 4567: 4558: 4557: 4552: 4551: 4530: 4524: 4523: 4521: 4519: 4500: 4494: 4493: 4491: 4489: 4480:. Archived from 4474: 4468: 4467: 4461: 4453: 4451: 4450: 4435: 4429: 4428: 4426: 4425: 4419: 4412: 4408:"CQ 2014-02 OPT" 4404: 4398: 4397: 4395: 4393: 4374: 4368: 4367: 4361: 4353: 4351: 4349: 4343: 4336: 4328: 4322: 4321: 4319: 4317: 4298: 4292: 4291: 4289: 4287: 4268: 4262: 4261: 4259: 4257: 4238: 4232: 4229: 4223: 4222: 4211: 4205: 4203: 4201: 4199: 4184: 4178: 4177: 4175: 4173: 4164:. Archived from 4154: 4148: 4147: 4125: 4119: 4118: 4116: 4110:. Archived from 4109: 4101: 4095: 4094: 4092: 4090: 4079:www.uhfcb.com.au 4071: 4065: 4064: 4062: 4060: 4041: 4035: 4034: 4032: 4030: 4012: 4003: 4002: 4000: 3998: 3979: 3973: 3972: 3970: 3968: 3959:. Archived from 3948: 3942: 3941: 3939: 3937: 3918: 3912: 3911: 3909: 3907: 3901: 3894: 3886: 3880: 3879: 3877: 3875: 3869: 3862: 3852: 3846: 3845: 3843: 3841: 3835: 3824: 3816: 3810: 3809: 3798: 3792: 3791: 3789: 3787: 3781: 3774: 3766: 3760: 3759: 3751: 3745: 3744: 3742: 3740: 3725: 3719: 3718: 3716: 3714: 3699: 3693: 3692: 3690: 3688: 3673: 3664: 3663: 3661: 3659: 3644: 3638: 3637: 3635: 3633: 3618: 3612: 3611: 3606:. Archived from 3600: 3594: 3591: 3585: 3584: 3582: 3580: 3565: 3559: 3558: 3547: 3541: 3540: 3529: 3523: 3522: 3520: 3518: 3503: 3497: 3496: 3485: 3479: 3478: 3476: 3474: 3455: 3449: 3448: 3437: 3431: 3430: 3412: 3401: 3400: 3395:. Archived from 3382: 3376: 3375: 3373: 3371: 3356: 3350: 3349: 3347: 3345: 3334: 3328: 3322: 3316: 3315: 3301: 3295: 3294: 3292: 3290: 3276: 3270: 3269: 3257: 3248: 3247: 3239: 3233: 3232: 3230: 3228: 3223:on 24 March 2021 3213: 3207: 3206: 3204: 3203: 3188: 3182: 3181: 3163: 3150: 3149: 3147: 3145: 3130: 3124: 3123: 3117: 3109: 3107: 3105: 3085: 3069: 3066:S9 Magazine 3062: 3056: 3053: 3047: 3044: 3038: 3031: 3025: 3022: 3016: 3013: 3007: 3004: 2988:List of CB slang 2915:s successor was 2884:Modern Electrics 1879: 1878: 1708: 1701: 1697: 1694: 1688: 1657: 1649: 1638:27.145 MHz 1566: 1565: 1534:27.405 MHz 1526:27.325 MHz 1518:27.235 MHz 1510:27.155 MHz 1502:27.055 MHz 1494:27.395 MHz 1486:27.315 MHz 1478:27.255 MHz 1470:27.135 MHz 1462:27.035 MHz 1454:27.385 MHz 1446:27.305 MHz 1438:27.225 MHz 1430:27.125 MHz 1422:27.025 MHz 1414:27.375 MHz 1406:27.295 MHz 1398:27.215 MHz 1390:27.115 MHz 1382:27.015 MHz 1374:27.365 MHz 1366:27.285 MHz 1358:27.205 MHz 1350:27.105 MHz 1342:27.005 MHz 1334:27.355 MHz 1326:27.275 MHz 1318:27.185 MHz 1310:27.085 MHz 1302:26.985 MHz 1294:27.345 MHz 1286:27.265 MHz 1278:27.175 MHz 1270:27.075 MHz 1262:26.975 MHz 1254:27.335 MHz 1246:27.245 MHz 1238:27.165 MHz 1230:27.065 MHz 1222:26.965 MHz 1176: 1083:Trafalgar Square 820: 816: 808:marine VHF radio 802:Marine VHF radio 765:four-wheel drive 722:AM Call Channel 700:Highway Channel 680: 676: 629:skip propagation 598:21st-century use 339:Handle with Care 280:1970s popularity 167:Yagi–Uda antenna 21: 7632: 7631: 7627: 7626: 7625: 7623: 7622: 7621: 7587: 7586: 7585: 7580: 7572: 7560: 7539: 7493: 7457: 7423:Papa Loved Mama 7361: 7308: 7182:Popular culture 7176: 7163: 7111: 7097:Keith Jesperson 7060: 7051:T/A & Petro 6993: 6915: 6884: 6851:National parcel 6845: 6782: 6716:Con-way Freight 6710:Averitt Express 6691: 6682:Western Express 6662:Roehl Transport 6647:Landstar System 6605:Averitt Express 6579: 6570:Wabash National 6555:Lufkin Trailers 6518: 6467: 6463:Workhorse Group 6143: 6092: 6088: 6078: 6073: 6043: 6038: 6019:Rayleigh fading 5961: 5955: 5902: 5895: 5859: 5812: 5806: 5759: 5753: 5682: 5677: 5647: 5642: 5602: 5600: 5592: 5534: 5471: 5393: 5357: 5314: 5263: 5255: 5196: 5189: 5095:Robert Metcalfe 4950:Tim Berners-Lee 4898: 4718:Information Age 4590: 4585: 4555: 4548: 4531: 4527: 4517: 4515: 4502: 4501: 4497: 4487: 4485: 4484:on 2 April 2015 4476: 4475: 4471: 4455: 4454: 4448: 4446: 4439:"Archived copy" 4437: 4436: 4432: 4423: 4421: 4417: 4410: 4406: 4405: 4401: 4391: 4389: 4376: 4375: 4371: 4355: 4354: 4347: 4345: 4341: 4334: 4332:"Archived copy" 4330: 4329: 4325: 4315: 4313: 4300: 4299: 4295: 4285: 4283: 4270: 4269: 4265: 4255: 4253: 4240: 4239: 4235: 4230: 4226: 4213: 4212: 4208: 4197: 4195: 4186: 4185: 4181: 4171: 4169: 4156: 4155: 4151: 4144: 4136:. p. 558. 4126: 4122: 4114: 4107: 4103: 4102: 4098: 4088: 4086: 4073: 4072: 4068: 4058: 4056: 4043: 4042: 4038: 4028: 4026: 4014: 4013: 4006: 3996: 3994: 3981: 3980: 3976: 3966: 3964: 3953:"Over and out?" 3949: 3945: 3935: 3933: 3920: 3919: 3915: 3905: 3903: 3899: 3892: 3888: 3887: 3883: 3873: 3871: 3867: 3860: 3854: 3853: 3849: 3839: 3837: 3833: 3822: 3818: 3817: 3813: 3800: 3799: 3795: 3785: 3783: 3779: 3772: 3768: 3767: 3763: 3752: 3748: 3738: 3736: 3727: 3726: 3722: 3712: 3710: 3703:"Marine Radios" 3701: 3700: 3696: 3686: 3684: 3675: 3674: 3667: 3657: 3655: 3652:www.acma.gov.au 3646: 3645: 3641: 3631: 3629: 3620: 3619: 3615: 3602: 3601: 3597: 3592: 3588: 3578: 3576: 3573:www.acrm.org.au 3567: 3566: 3562: 3549: 3548: 3544: 3531: 3530: 3526: 3516: 3514: 3505: 3504: 3500: 3487: 3486: 3482: 3472: 3470: 3457: 3456: 3452: 3439: 3438: 3434: 3427: 3413: 3404: 3383: 3379: 3369: 3367: 3357: 3353: 3343: 3341: 3336: 3335: 3331: 3323: 3319: 3302: 3298: 3288: 3286: 3284:news.google.com 3278: 3277: 3273: 3259: 3258: 3251: 3240: 3236: 3226: 3224: 3215: 3214: 3210: 3201: 3199: 3190: 3189: 3185: 3178: 3164: 3153: 3143: 3141: 3132: 3131: 3127: 3111: 3110: 3103: 3101: 3086: 3082: 3078: 3073: 3072: 3063: 3059: 3054: 3050: 3045: 3041: 3032: 3028: 3023: 3019: 3014: 3010: 3005: 3001: 2996: 2979: 2901: 2878: 2807: 2775: 2769: 2719: 2615:single sideband 2598:Superheterodyne 2578: 2509: 2489:radio repeaters 1738: 1732: 1716:Single-sideband 1709: 1698: 1692: 1689: 1674: 1658: 1647: 1630:27.095 MHz 1622:27.195 MHz 1614:27.045 MHz 1606:26.995 MHz 1548: 1141: 1120: 1094:TV interference 1066: 1060: 1048:channel spacing 1024: 980: 972:paging services 956: 826:Frequency (MHz) 804: 798: 785: 753: 733:LSB Call Local 686:Frequency (MHz) 658: 653: 600: 587:VHF Marine Band 583: 488:Breaker-Breaker 395:Dave Lee Travis 286:1973 oil crisis 282: 247:1.25-meter band 199: 194: 188: 183: 28: 23: 22: 15: 12: 11: 5: 7630: 7620: 7619: 7614: 7609: 7604: 7599: 7582: 7581: 7579: 7578: 7569: 7566: 7565: 7562: 7561: 7559: 7558: 7553: 7547: 7545: 7541: 7540: 7538: 7537: 7530: 7523: 7516: 7509: 7501: 7499: 7495: 7494: 7492: 7491: 7481: 7471: 7465: 7463: 7459: 7458: 7456: 7455: 7450: 7445: 7440: 7435: 7430: 7425: 7420: 7415: 7410: 7405: 7400: 7395: 7390: 7385: 7380: 7375: 7369: 7367: 7363: 7362: 7360: 7359: 7356:Trick My Truck 7352: 7345: 7338: 7331: 7324: 7316: 7314: 7310: 7309: 7307: 7306: 7299: 7292: 7285: 7278: 7271: 7264: 7257: 7250: 7243: 7236: 7229: 7222: 7215: 7208: 7201: 7193: 7191: 7184: 7178: 7177: 7175: 7174: 7168: 7165: 7164: 7162: 7161: 7156: 7151: 7146: 7141: 7136: 7135:(Dial-A-Truck) 7130: 7125: 7119: 7117: 7113: 7112: 7110: 7109: 7107:Reginald Denny 7104: 7099: 7094: 7089: 7084: 7079: 7074: 7068: 7066: 7062: 7061: 7059: 7058: 7053: 7048: 7043: 7038: 7036:Pilot Flying J 7033: 7028: 7023: 7018: 7013: 7007: 7005: 6999: 6998: 6995: 6994: 6992: 6991: 6986: 6981: 6976: 6971: 6969:North American 6966: 6961: 6956: 6951: 6946: 6941: 6936: 6931: 6925: 6923: 6917: 6916: 6914: 6913: 6908: 6903: 6898: 6892: 6890: 6886: 6885: 6883: 6882: 6877: 6872: 6867: 6862: 6856: 6854: 6847: 6846: 6844: 6843: 6838: 6836:Trailer Bridge 6833: 6828: 6823: 6818: 6817: 6816: 6806: 6801: 6793: 6791: 6784: 6783: 6781: 6780: 6773: 6768: 6766:TForce Freight 6763: 6758: 6753: 6748: 6743: 6736: 6731: 6726: 6719: 6712: 6707: 6701: 6699: 6693: 6692: 6690: 6689: 6684: 6679: 6674: 6669: 6664: 6659: 6654: 6649: 6644: 6639: 6634: 6629: 6624: 6619: 6614: 6607: 6601: 6599: 6589: 6588:Motor carriers 6585: 6584: 6581: 6580: 6578: 6577: 6572: 6567: 6562: 6557: 6552: 6547: 6542: 6537: 6532: 6526: 6524: 6520: 6519: 6517: 6516: 6511: 6506: 6501: 6496: 6491: 6489:Detroit Diesel 6486: 6481: 6475: 6473: 6469: 6468: 6466: 6465: 6460: 6453: 6448: 6441: 6436: 6431: 6426: 6419: 6414: 6409: 6404: 6397: 6392: 6387: 6382: 6375: 6368: 6363: 6358: 6353: 6348: 6343: 6336: 6331: 6324: 6319: 6314: 6309: 6304: 6299: 6294: 6289: 6282: 6277: 6272: 6267: 6262: 6257: 6256: 6255: 6248: 6234: 6227: 6225:CNH Industrial 6222: 6217: 6212: 6205: 6200: 6195: 6188: 6183: 6176: 6171: 6164: 6158: 6156: 6149: 6145: 6144: 6142: 6141: 6136: 6131: 6126: 6121: 6116: 6111: 6106: 6100: 6098: 6094: 6093: 6083: 6080: 6079: 6072: 6071: 6064: 6057: 6049: 6040: 6039: 6037: 6036: 6031: 6026: 6021: 6016: 6011: 6006: 6001: 5996: 5991: 5986: 5981: 5976: 5971: 5965: 5963: 5962:and principles 5957: 5956: 5954: 5953: 5948: 5943: 5938: 5933: 5928: 5923: 5918: 5913: 5907: 5905: 5897: 5896: 5894: 5893: 5888: 5883: 5878: 5873: 5867: 5865: 5861: 5860: 5858: 5857: 5852: 5847: 5842: 5840:Radio repeater 5837: 5832: 5827: 5822: 5816: 5814: 5808: 5807: 5805: 5804: 5799: 5794: 5789: 5784: 5779: 5774: 5769: 5763: 5761: 5755: 5754: 5752: 5751: 5746: 5741: 5736: 5731: 5726: 5721: 5716: 5711: 5706: 5701: 5696: 5690: 5688: 5684: 5683: 5676: 5675: 5668: 5661: 5653: 5644: 5643: 5641: 5640: 5630: 5620: 5610: 5597: 5594: 5593: 5591: 5590: 5583: 5578: 5573: 5568: 5563: 5562: 5561: 5556: 5548: 5542: 5540: 5536: 5535: 5533: 5532: 5527: 5522: 5517: 5512: 5507: 5502: 5497: 5492: 5487: 5481: 5479: 5473: 5472: 5470: 5469: 5464: 5459: 5454: 5449: 5444: 5439: 5434: 5429: 5424: 5419: 5414: 5409: 5403: 5401: 5395: 5394: 5392: 5391: 5386: 5381: 5376: 5371: 5365: 5363: 5359: 5358: 5356: 5355: 5350: 5345: 5340: 5335: 5330: 5328:Space-division 5324: 5322: 5316: 5315: 5313: 5312: 5307: 5306: 5305: 5300: 5290: 5289: 5288: 5278: 5273: 5267: 5265: 5257: 5256: 5254: 5253: 5252: 5251: 5241: 5240: 5239: 5229: 5224: 5219: 5218: 5217: 5207: 5201: 5199: 5191: 5190: 5188: 5187: 5182: 5177: 5172: 5167: 5165:Camille Tissot 5162: 5157: 5152: 5147: 5142: 5140:Claude Shannon 5137: 5132: 5130:Tivadar Puskás 5127: 5122: 5117: 5112: 5107: 5102: 5100:Antonio Meucci 5097: 5092: 5087: 5082: 5077: 5072: 5070:Charles K. Kao 5067: 5062: 5057: 5052: 5047: 5045:Harold Hopkins 5042: 5037: 5032: 5027: 5022: 5017: 5012: 5007: 5002: 4997: 4992: 4987: 4982: 4977: 4972: 4967: 4962: 4957: 4952: 4947: 4945:Emile Berliner 4942: 4937: 4932: 4927: 4922: 4917: 4912: 4906: 4904: 4900: 4899: 4897: 4896: 4891: 4886: 4884:Videotelephony 4881: 4876: 4875: 4874: 4869: 4859: 4852: 4847: 4841: 4836: 4831: 4826: 4821: 4820: 4819: 4814: 4809: 4799: 4798: 4797: 4787: 4782: 4780:Radiotelephone 4777: 4772: 4767: 4762: 4757: 4752: 4747: 4746: 4745: 4735: 4730: 4725: 4720: 4715: 4710: 4705: 4700: 4695: 4690: 4685: 4684: 4683: 4678: 4673: 4668: 4666:Internet video 4658: 4657: 4656: 4651: 4646: 4641: 4631: 4626: 4621: 4616: 4611: 4606: 4600: 4598: 4592: 4591: 4584: 4583: 4576: 4569: 4561: 4554: 4553: 4546: 4525: 4508:Sugar-Delta.it 4495: 4469: 4430: 4399: 4369: 4323: 4293: 4263: 4233: 4224: 4206: 4179: 4149: 4142: 4120: 4096: 4066: 4036: 4004: 3974: 3943: 3913: 3881: 3847: 3811: 3793: 3782:on 6 July 2011 3761: 3746: 3720: 3694: 3677:"Marine radio" 3665: 3639: 3613: 3610:on 8 May 2009. 3595: 3586: 3560: 3542: 3524: 3498: 3480: 3450: 3432: 3425: 3402: 3399:on 2016-12-16. 3377: 3351: 3329: 3317: 3296: 3271: 3249: 3246:. p. 112. 3234: 3208: 3196:No Wires Radio 3183: 3176: 3151: 3125: 3079: 3077: 3074: 3071: 3070: 3057: 3048: 3039: 3026: 3017: 3008: 2998: 2997: 2995: 2992: 2991: 2990: 2985: 2978: 2975: 2967:scanner radios 2900: 2897: 2877: 2874: 2836:amateur radios 2806: 2803: 2771:Main article: 2768: 2765: 2718: 2715: 2714: 2713: 2710: 2704: 2698: 2695: 2685: 2672: 2671: 2670:Volume control 2668: 2666:antenna cables 2655: 2652: 2648: 2642: 2636: 2629: 2577: 2574: 2508: 2505: 2481:Czech Republic 2453: 2452: 2449: 2446: 2443: 2439: 2438: 2435: 2432: 2429: 2425: 2424: 2421: 2418: 2415: 2411: 2410: 2407: 2404: 2401: 2397: 2396: 2393: 2390: 2387: 2383: 2382: 2379: 2376: 2373: 2369: 2368: 2365: 2362: 2359: 2355: 2354: 2351: 2348: 2345: 2341: 2340: 2337: 2334: 2331: 2327: 2326: 2323: 2320: 2317: 2313: 2312: 2309: 2306: 2303: 2299: 2298: 2295: 2292: 2289: 2285: 2284: 2281: 2278: 2275: 2271: 2270: 2267: 2264: 2261: 2257: 2256: 2253: 2250: 2247: 2243: 2242: 2239: 2236: 2233: 2229: 2228: 2225: 2222: 2219: 2215: 2214: 2211: 2208: 2205: 2201: 2200: 2197: 2194: 2191: 2187: 2186: 2183: 2180: 2177: 2173: 2172: 2169: 2166: 2163: 2159: 2158: 2155: 2152: 2149: 2145: 2144: 2141: 2138: 2135: 2131: 2130: 2127: 2124: 2121: 2117: 2116: 2113: 2110: 2107: 2103: 2102: 2099: 2096: 2093: 2089: 2088: 2085: 2082: 2079: 2075: 2074: 2071: 2068: 2065: 2061: 2060: 2057: 2054: 2051: 2047: 2046: 2043: 2040: 2037: 2033: 2032: 2029: 2026: 2023: 2019: 2018: 2015: 2012: 2009: 2005: 2004: 2001: 1998: 1995: 1991: 1990: 1987: 1984: 1981: 1977: 1976: 1973: 1970: 1967: 1963: 1962: 1959: 1956: 1953: 1949: 1948: 1945: 1942: 1939: 1935: 1934: 1931: 1928: 1925: 1921: 1920: 1917: 1914: 1911: 1907: 1906: 1903: 1900: 1897: 1893: 1892: 1889: 1886: 1883: 1855: 1854: 1851: 1848: 1844: 1843: 1840: 1837: 1834: 1831: 1828: 1825: 1822: 1807:frequency plan 1789: 1788: 1785: 1782: 1779: 1750:United Kingdom 1734:Main article: 1731: 1728: 1711: 1710: 1661: 1659: 1652: 1646: 1643: 1640: 1639: 1636: 1631: 1628: 1623: 1620: 1615: 1612: 1607: 1604: 1598: 1597: 1594: 1591: 1588: 1585: 1582: 1579: 1576: 1573: 1570: 1547: 1544: 1543: 1542: 1536: 1535: 1532: 1529: 1527: 1524: 1521: 1519: 1516: 1513: 1511: 1508: 1505: 1503: 1500: 1496: 1495: 1492: 1489: 1487: 1484: 1481: 1479: 1476: 1473: 1471: 1468: 1465: 1463: 1460: 1456: 1455: 1452: 1449: 1447: 1444: 1441: 1439: 1436: 1433: 1431: 1428: 1425: 1423: 1420: 1416: 1415: 1412: 1409: 1407: 1404: 1401: 1399: 1396: 1393: 1391: 1388: 1385: 1383: 1380: 1376: 1375: 1372: 1369: 1367: 1364: 1361: 1359: 1356: 1353: 1351: 1348: 1345: 1343: 1340: 1336: 1335: 1332: 1329: 1327: 1324: 1321: 1319: 1316: 1313: 1311: 1308: 1305: 1303: 1300: 1296: 1295: 1292: 1289: 1287: 1284: 1281: 1279: 1276: 1273: 1271: 1268: 1265: 1263: 1260: 1256: 1255: 1252: 1249: 1247: 1244: 1241: 1239: 1236: 1233: 1231: 1228: 1225: 1223: 1220: 1216: 1215: 1212: 1209: 1207: 1204: 1201: 1199: 1196: 1193: 1191: 1188: 1185: 1183: 1180: 1140: 1137: 1119: 1116: 1075:27/81 Bandplan 1062:Main article: 1059: 1058:United Kingdom 1056: 1052:Malaysia Boleh 1023: 1020: 979: 976: 955: 952: 941: 940: 937: 934: 930: 929: 926: 923: 919: 918: 915: 912: 908: 907: 904: 901: 897: 896: 893: 890: 886: 885: 882: 879: 875: 874: 871: 868: 864: 863: 860: 857: 853: 852: 849: 846: 842: 841: 838: 835: 831: 830: 827: 824: 823:Channel Number 797: 794: 784: 781: 773:Latrobe Valley 752: 749: 746: 745: 742: 739: 735: 734: 731: 728: 724: 723: 720: 717: 713: 712: 709: 706: 702: 701: 698: 695: 691: 690: 687: 684: 683:Channel Number 657: 654: 652: 649: 599: 596: 582: 579: 509: 508: 502: 492: 476: 465: 449: 442: 420: 406: 341:) (1977), and 281: 278: 251:remote control 198: 195: 190:Main article: 187: 184: 182: 179: 83:high frequency 75:two-way radios 26: 9: 6: 4: 3: 2: 7629: 7618: 7615: 7613: 7612:Radio hobbies 7610: 7608: 7605: 7603: 7600: 7598: 7595: 7594: 7592: 7576: 7571: 7570: 7567: 7557: 7554: 7552: 7549: 7548: 7546: 7542: 7536: 7535: 7531: 7529: 7528: 7524: 7522: 7521: 7517: 7515: 7514: 7510: 7508: 7507: 7503: 7502: 7500: 7496: 7489: 7485: 7482: 7479: 7475: 7472: 7470: 7467: 7466: 7464: 7460: 7454: 7451: 7449: 7446: 7444: 7441: 7439: 7436: 7434: 7431: 7429: 7426: 7424: 7421: 7419: 7416: 7414: 7411: 7409: 7406: 7404: 7401: 7399: 7396: 7394: 7391: 7389: 7386: 7384: 7381: 7379: 7376: 7374: 7371: 7370: 7368: 7364: 7358: 7357: 7353: 7351: 7350: 7346: 7344: 7343: 7339: 7337: 7336: 7332: 7330: 7329: 7325: 7323: 7322: 7318: 7317: 7315: 7311: 7305: 7304: 7300: 7298: 7297: 7293: 7291: 7290: 7286: 7284: 7283: 7279: 7277: 7276: 7272: 7270: 7269: 7265: 7263: 7262: 7258: 7256: 7255: 7251: 7249: 7248: 7244: 7242: 7241: 7237: 7235: 7234: 7230: 7228: 7227: 7223: 7221: 7220: 7216: 7214: 7213: 7209: 7207: 7206: 7202: 7200: 7199: 7195: 7194: 7192: 7188: 7185: 7183: 7179: 7173: 7170: 7169: 7166: 7160: 7157: 7155: 7152: 7150: 7147: 7145: 7142: 7140: 7137: 7134: 7133:DAT Solutions 7131: 7129: 7126: 7124: 7121: 7120: 7118: 7116:Organizations 7114: 7108: 7105: 7103: 7100: 7098: 7095: 7093: 7090: 7088: 7085: 7083: 7080: 7078: 7075: 7073: 7070: 7069: 7067: 7063: 7057: 7054: 7052: 7049: 7047: 7044: 7042: 7039: 7037: 7034: 7032: 7029: 7027: 7024: 7022: 7019: 7017: 7014: 7012: 7011:BETO Junction 7009: 7008: 7006: 7004: 7000: 6990: 6987: 6985: 6982: 6980: 6977: 6975: 6972: 6970: 6967: 6965: 6962: 6960: 6957: 6955: 6952: 6950: 6947: 6945: 6942: 6940: 6937: 6935: 6932: 6930: 6927: 6926: 6924: 6922: 6918: 6912: 6909: 6907: 6904: 6902: 6899: 6897: 6894: 6893: 6891: 6887: 6881: 6878: 6876: 6873: 6871: 6868: 6866: 6863: 6861: 6858: 6857: 6855: 6852: 6848: 6842: 6839: 6837: 6834: 6832: 6829: 6827: 6824: 6822: 6819: 6815: 6812: 6811: 6810: 6809:C.H. Robinson 6807: 6805: 6802: 6800: 6799: 6795: 6794: 6792: 6789: 6785: 6779: 6778: 6774: 6772: 6769: 6767: 6764: 6762: 6759: 6757: 6754: 6752: 6749: 6747: 6744: 6742: 6741: 6737: 6735: 6732: 6730: 6727: 6725: 6724: 6720: 6718: 6717: 6713: 6711: 6708: 6706: 6703: 6702: 6700: 6698: 6694: 6688: 6687:WTI Transport 6685: 6683: 6680: 6678: 6675: 6673: 6670: 6668: 6665: 6663: 6660: 6658: 6655: 6653: 6652:PAM Transport 6650: 6648: 6645: 6643: 6640: 6638: 6635: 6633: 6630: 6628: 6625: 6623: 6620: 6618: 6615: 6613: 6612: 6608: 6606: 6603: 6602: 6600: 6597: 6593: 6590: 6586: 6576: 6573: 6571: 6568: 6566: 6563: 6561: 6558: 6556: 6553: 6551: 6548: 6546: 6543: 6541: 6538: 6536: 6533: 6531: 6528: 6527: 6525: 6521: 6515: 6512: 6510: 6507: 6505: 6504:Mercedes-Benz 6502: 6500: 6497: 6495: 6492: 6490: 6487: 6485: 6482: 6480: 6477: 6476: 6474: 6470: 6464: 6461: 6459: 6458: 6454: 6452: 6449: 6447: 6446: 6445:Ward LaFrance 6442: 6440: 6437: 6435: 6432: 6430: 6427: 6425: 6424: 6420: 6418: 6415: 6413: 6410: 6408: 6405: 6403: 6402: 6398: 6396: 6393: 6391: 6388: 6386: 6383: 6381: 6380: 6376: 6374: 6373: 6369: 6367: 6364: 6362: 6359: 6357: 6354: 6352: 6349: 6347: 6344: 6342: 6341: 6337: 6335: 6334:Mercedes-Benz 6332: 6330: 6329: 6325: 6323: 6320: 6318: 6315: 6313: 6312:International 6310: 6308: 6305: 6303: 6300: 6298: 6295: 6293: 6290: 6288: 6287: 6283: 6281: 6278: 6276: 6273: 6271: 6268: 6266: 6263: 6261: 6258: 6254: 6253: 6249: 6247: 6246: 6242: 6241: 6240: 6239: 6235: 6233: 6232: 6228: 6226: 6223: 6221: 6218: 6216: 6213: 6211: 6210: 6206: 6204: 6201: 6199: 6196: 6194: 6193: 6189: 6187: 6184: 6182: 6181: 6177: 6175: 6172: 6170: 6169: 6165: 6163: 6160: 6159: 6157: 6153: 6150: 6148:Manufacturers 6146: 6140: 6137: 6135: 6132: 6130: 6127: 6125: 6122: 6120: 6117: 6115: 6112: 6110: 6107: 6105: 6102: 6101: 6099: 6095: 6091: 6087: 6081: 6077: 6070: 6065: 6063: 6058: 6056: 6051: 6050: 6047: 6035: 6032: 6030: 6027: 6025: 6022: 6020: 6017: 6015: 6012: 6010: 6007: 6005: 6002: 6000: 5997: 5995: 5992: 5990: 5987: 5985: 5982: 5980: 5977: 5975: 5972: 5970: 5967: 5966: 5964: 5958: 5952: 5949: 5947: 5944: 5942: 5939: 5937: 5934: 5932: 5929: 5927: 5924: 5922: 5919: 5917: 5914: 5912: 5909: 5908: 5906: 5904: 5898: 5892: 5889: 5887: 5884: 5882: 5879: 5877: 5874: 5872: 5869: 5868: 5866: 5862: 5856: 5855:Walkie-talkie 5853: 5851: 5848: 5846: 5843: 5841: 5838: 5836: 5833: 5831: 5828: 5826: 5825:Business band 5823: 5821: 5818: 5817: 5815: 5809: 5803: 5800: 5798: 5795: 5793: 5790: 5788: 5785: 5783: 5780: 5778: 5775: 5773: 5770: 5768: 5765: 5764: 5762: 5756: 5750: 5747: 5745: 5742: 5740: 5737: 5735: 5732: 5730: 5727: 5725: 5722: 5720: 5717: 5715: 5712: 5710: 5707: 5705: 5702: 5700: 5697: 5695: 5694:Amateur radio 5692: 5691: 5689: 5685: 5681: 5680:Two-way radio 5674: 5669: 5667: 5662: 5660: 5655: 5654: 5651: 5639: 5631: 5629: 5621: 5619: 5611: 5609: 5599: 5598: 5595: 5588: 5584: 5582: 5579: 5577: 5574: 5572: 5569: 5567: 5564: 5560: 5557: 5555: 5552: 5551: 5549: 5547: 5544: 5543: 5541: 5537: 5531: 5528: 5526: 5523: 5521: 5518: 5516: 5513: 5511: 5508: 5506: 5503: 5501: 5498: 5496: 5493: 5491: 5488: 5486: 5483: 5482: 5480: 5478: 5474: 5468: 5465: 5463: 5460: 5458: 5455: 5453: 5450: 5448: 5445: 5443: 5440: 5438: 5435: 5433: 5430: 5428: 5425: 5423: 5420: 5418: 5415: 5413: 5410: 5408: 5405: 5404: 5402: 5400: 5396: 5390: 5387: 5385: 5382: 5380: 5377: 5375: 5372: 5370: 5367: 5366: 5364: 5360: 5354: 5353:Code-division 5351: 5349: 5346: 5344: 5341: 5339: 5338:Time-division 5336: 5334: 5331: 5329: 5326: 5325: 5323: 5321: 5317: 5311: 5308: 5304: 5301: 5299: 5296: 5295: 5294: 5291: 5287: 5284: 5283: 5282: 5279: 5277: 5274: 5272: 5269: 5268: 5266: 5264:and switching 5262: 5258: 5250: 5247: 5246: 5245: 5242: 5238: 5235: 5234: 5233: 5230: 5228: 5225: 5223: 5220: 5216: 5215:optical fiber 5213: 5212: 5211: 5208: 5206: 5205:Coaxial cable 5203: 5202: 5200: 5198: 5192: 5186: 5183: 5181: 5178: 5176: 5173: 5171: 5168: 5166: 5163: 5161: 5158: 5156: 5153: 5151: 5148: 5146: 5143: 5141: 5138: 5136: 5133: 5131: 5128: 5126: 5123: 5121: 5120:Radia Perlman 5118: 5116: 5113: 5111: 5108: 5106: 5103: 5101: 5098: 5096: 5093: 5091: 5088: 5086: 5083: 5081: 5078: 5076: 5073: 5071: 5068: 5066: 5063: 5061: 5058: 5056: 5053: 5051: 5048: 5046: 5043: 5041: 5038: 5036: 5033: 5031: 5028: 5026: 5023: 5021: 5018: 5016: 5013: 5011: 5010:Lee de Forest 5008: 5006: 5005:Thomas Edison 5003: 5001: 4998: 4996: 4995:Donald Davies 4993: 4991: 4988: 4986: 4983: 4981: 4980:Claude Chappe 4978: 4976: 4973: 4971: 4968: 4966: 4963: 4961: 4958: 4956: 4953: 4951: 4948: 4946: 4943: 4941: 4938: 4936: 4933: 4931: 4928: 4926: 4923: 4921: 4918: 4916: 4913: 4911: 4908: 4907: 4905: 4901: 4895: 4892: 4890: 4887: 4885: 4882: 4880: 4877: 4873: 4870: 4868: 4865: 4864: 4863: 4860: 4858: 4857: 4853: 4851: 4848: 4845: 4842: 4840: 4837: 4835: 4832: 4830: 4827: 4825: 4824:Smoke signals 4822: 4818: 4815: 4813: 4810: 4808: 4805: 4804: 4803: 4802:Semiconductor 4800: 4796: 4793: 4792: 4791: 4788: 4786: 4783: 4781: 4778: 4776: 4773: 4771: 4768: 4766: 4763: 4761: 4758: 4756: 4753: 4751: 4748: 4744: 4741: 4740: 4739: 4736: 4734: 4731: 4729: 4726: 4724: 4721: 4719: 4716: 4714: 4711: 4709: 4706: 4704: 4701: 4699: 4696: 4694: 4691: 4689: 4686: 4682: 4679: 4677: 4674: 4672: 4669: 4667: 4664: 4663: 4662: 4661:Digital media 4659: 4655: 4652: 4650: 4647: 4645: 4642: 4640: 4637: 4636: 4635: 4632: 4630: 4627: 4625: 4622: 4620: 4617: 4615: 4612: 4610: 4607: 4605: 4602: 4601: 4599: 4597: 4593: 4589: 4582: 4577: 4575: 4570: 4568: 4563: 4562: 4559: 4549: 4543: 4539: 4535: 4534:King, Stephen 4529: 4513: 4509: 4505: 4499: 4483: 4479: 4473: 4465: 4459: 4444: 4440: 4434: 4416: 4409: 4403: 4387: 4383: 4382:www.qrz11.com 4379: 4373: 4365: 4359: 4340: 4333: 4327: 4311: 4307: 4303: 4297: 4281: 4277: 4273: 4267: 4251: 4247: 4243: 4237: 4228: 4220: 4216: 4210: 4193: 4189: 4183: 4167: 4163: 4159: 4153: 4145: 4143:9781418012625 4139: 4135: 4131: 4124: 4113: 4106: 4100: 4084: 4080: 4076: 4070: 4054: 4050: 4046: 4040: 4024: 4020: 4017: 4011: 4009: 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2932: 2928: 2924: 2920: 2919: 2914: 2910: 2906: 2896: 2894: 2890: 2886: 2885: 2873: 2870: 2866: 2865:10 meter 2861: 2859: 2854: 2849: 2846: 2845:10 meter 2841: 2837: 2832: 2829: 2823: 2819: 2817: 2813: 2812:10-meter band 2802: 2800: 2796: 2791: 2788: 2784: 2780: 2774: 2764: 2762: 2756: 2753: 2749: 2744: 2740: 2737: 2736:loading coils 2728: 2723: 2711: 2708: 2705: 2702: 2699: 2696: 2694: 2690: 2689:piezoelectric 2686: 2683: 2680: 2679: 2678: 2676: 2669: 2667: 2663: 2659: 2656: 2653: 2649: 2646: 2643: 2640: 2637: 2634: 2630: 2627: 2626:noise blanker 2623: 2622: 2621: 2618: 2616: 2612: 2608: 2603: 2599: 2595: 2591: 2590:Walkie-talkie 2587: 2583: 2573: 2569: 2567: 2563: 2559: 2554: 2552: 2548: 2543: 2538: 2536: 2530: 2526: 2524: 2520: 2515: 2504: 2502: 2497: 2493: 2490: 2486: 2482: 2477: 2475: 2471: 2469: 2465: 2463: 2459: 2450: 2447: 2444: 2441: 2440: 2436: 2433: 2430: 2427: 2426: 2422: 2419: 2416: 2413: 2412: 2408: 2405: 2402: 2399: 2398: 2394: 2391: 2388: 2385: 2384: 2380: 2377: 2374: 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Hunt 6545:Great Dane 6366:Ram Trucks 6162:AM General 5734:Mobile rig 5566:Antarctica 5525:Toasternet 5447:Television 4930:Paul Baran 4862:Television 4846:(teletype) 4839:Telegraphy 4817:transistor 4795:Phryctoria 4765:Photophone 4743:Smartphone 4733:Mass media 4449:2015-03-10 4424:2015-03-10 4188:"Raytheon" 3967:22 October 3906:19 January 3874:19 January 3840:1 November 3802:"CB Radio" 3533:"Movement" 3370:11 October 3344:11 October 3227:21 October 3217:"Overview" 3202:2020-07-06 3076:References 2927:RadioShack 2826:include a 2783:ionosphere 2675:Microphone 2576:Technology 1891:Frequency 1885:Frequency 1596:Frequency 1561:Eurobalise 1214:Frequency 1206:Frequency 1198:Frequency 1190:Frequency 1182:Frequency 1151:) and the 1131:(AM), and 996:Yogyakarta 800:See also: 551:chat rooms 520:Betty Ford 499:Red Sovine 284:After the 253:devices). 7607:Bandplans 7488:Dave Nemo 7478:Bill Mack 7418:Movin' On 7349:Movin' On 7205:Breakdown 7198:Black Dog 7092:John Hunt 7056:Town Pump 6959:Mayflower 6901:LaserShip 6870:Greyhound 6841:XPO, Inc. 6821:CaseStack 6790:providers 6771:XPO, Inc. 6667:Schneider 6596:Truckload 6499:MaxxForce 6429:UD Trucks 6361:Peterbilt 6245:Diamond T 6215:Chevrolet 5994:DC remote 5984:Call sign 5758:Aviation 5550:Americas 5539:Locations 5510:Internet2 5271:Bandwidth 4975:Vint Cerf 4872:streaming 4850:Telephone 4790:Semaphore 4681:streaming 4538:The Stand 4510:. 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